Choose the direction vector for which the function f defined by f(x,y) = sin(11x)cos(3y) has the minimum rate of change at the point π/4,π/4)(-11/2, 3/2)(11/2. -3/2)(-11/2, -3/2)None of the others(11/2, 3/2)

The distribution of the sample mean is approximately normal with a mean of 40 and a standard deviation of 0.559.

We are required to determine the distribution of the sample mean when a random sample of size n = 16 is taken from a normal population with mean 40 and variance 5.

The distribution of the sample mean can be found using the Central Limit Theorem, which states that when a sufficiently large sample is taken from a population with any shape, the sample mean will be approximately normally distributed. In this case, we have a normal population with mean (μ) 40 and variance (σ²) 5.

1: Calculate the standard deviation (σ) from the variance:

σ = √(σ²) = √5 ≈ 2.236

2: Calculate the standard error (SE) using the sample size (n) and the population standard deviation (σ):

SE = σ/√n = 2.236/√16 = 2.236/4 = 0.559

3: Determine the distribution of the sample mean:

The sample mean will follow a normal distribution with the same mean (μ) as the population mean and a standard deviation equal to the standard error (SE).

So, the distribution of the sample mean contains a mean of 40 and a standard deviation of 0.559.

Learn more about Central Limit Theorem:

https://brainly.com/question/18403552

#SPJ11

The estimated expectation of the given observations is 61.00 meters, and the estimated standard deviation is 1.27 meters.

These estimates are obtained using the sample mean and sample standard deviation formulae, which are unbiased estimators of the population mean and population standard deviation, respectively.

To estimate the population mean, we calculate the sample mean as the sum of the observations divided by the sample size, which is 61.00 meters. To estimate the population standard deviation, we calculate the sample standard deviation as the square root of the sum of the squared deviations of each observation from the sample mean divided by the sample size minus one, which is 1.27 meters.

The given information, Στ = -550.28 and Σα? = 33656.86, can be used to check the accuracy of the estimates.

The sum of the squared deviations of each observation from the sample mean multiplied by the sample size minus one is equal to the sum of squares of deviations from the population mean multiplied by the sample size minus one, which is denoted as Σ(Xi - μ)2 = (n-1)σ2. Using these formulae, we can calculate the sample mean and sample standard deviation and verify the given information.

Learn more about Standard Deviation:

brainly.com/question/13498201

#SPJ11

The width of the sidewalk is approximately 3.21 feet (rounded to two decimal places).

Let's use the given information to solve for the width (x) of the sidewalk. The area of the rectangular swimming pool is 20 feet by 30 feet, which equals 600 square feet (20*30 = 600).

The total area of the pool and sidewalk is given as 825 square feet. To find the area of just the sidewalk, we subtract the area of the pool from the total area: 825 - 600 = 225 square feet.

Now, let's express the area of the sidewalk using the dimensions of the pool and the width of the sidewalk (x). Since the sidewalk is on 3 sides, we can represent the area as follows:

2(20x) + 30x = 225

Simplify the equation:

40x + 30x = 225

Combine the terms:

70x = 225

Now, solve for x:

x = 225 / 70

x ≈ 3.21

The width of the sidewalk is approximately 3.21 feet (rounded to two decimal places).

To learn more about width here;

brainly.com/question/12298654#

#SPJ11

The following mathematical operation must be carried out in order to determine a cylinder's volume: V = h r².

How can I calculate a cylinder's volume?

We must work out the following mathematical equation in order to determine a cylinder's volume:

V = Πhr² (h = height of cylinder, r= radius)

Let's use an instance.

The size of our example cylinder is 6 centimetres in diameter and 10 centimetres height. What is the size of it?

We substitute the values as follows to determine the volume:

Volume = 3.1415 x 10 cm x 3 cm²

= 307.35 cm³

Therefore, The following mathematical operation must be carried out in order to determine a cylinder's volume: V = h r².

To know more about volume check the below link:

https://brainly.com/question/9554871

#SPJ1

The correct interpretation of the function is that it depicts the exponential rise of the number of Movie Bank worldwide locations x years since 2004, with a growth rate of 0.62.

What is the function?

A function is a rule that pairs up every element of one set, known as the domain, with a specific aspect of another set, known as the range or codomain. In other words, a function describes a relationship between two sets in which each input from the domain corresponds to exactly one output from the range.

To interpret the function correctly, we need to consider the values of x.

If x = 0, then the year 2004 is indicated because the function is expressed in terms of x years since 2004.

The base, 0.62, falls between 0 and 1, making the function an exponential growth function. In other words, the function will approach but never reach 0.

The function, for example, becomes m(1) = [tex]9,000(0.62)^{1}[/tex] = 5,580 if x = 1. This indicates that around 5,580 Movie Bank locations exist in the world as of 2004, one year later.

The function will continue to increase if x is raised further but at a diminishing rate. The function, for instance, becomes m(5) = [tex]9,000(0.62)^{5}[/tex] = 1,673 if x = 5. This indicates that roughly 1,673 Movie Bank locations are located throughout the world, which is significantly fewer than the previous figure, five years following the year 2004.

Therefore, the correct interpretation of the function is that it shows the exponential growth of the number of worldwide locations of Movie Bank x years since 2004, where the growth rate is 0.62.

Learn more about Functions from the given link.

https://brainly.com/question/11624077

#SPJ1

Answer:

Movie Bank locations have decreased at a rate of 38% each year since 2004.

The derivative of the function g(x) = (5x2 + 4x - 4)e is g'(x) = (10x + 4)e + (5x2 + 4x - 4)(e).

To find the derivative of the function g(x) = (5x2 + 4x - 4)e, we can use the product rule of differentiation. The product rule states that if we have two functions u(x) and v(x), then the derivative of their product is given by:

(uv)' = u'v + uv'

In this case, we can take u(x) = 5x2 + 4x - 4 and v(x) = e. Then, using the power rule and the fact that the derivative of e to any power is e to the same power, we get:

u'(x) = 10x + 4

v'(x) = e

Putting it all together, we get:

g'(x) = (5x2 + 4x - 4)'e + (5x2 + 4x - 4)(e)'

g'(x) = (10x + 4)e + (5x2 + 4x - 4)(e)

Know more about derivative here:

https://brainly.com/question/30365299

#SPJ11

Answer:

Step-by-step explanation:

(6x+2)

For a normal distribution of random variable of tread life of a particular brand, the probability a particular tire of this brand will last longer than 58,400 miles is equals to the 0.4533.

We have, tread life of a particular brand of tire is represents a random variable. It is normally distributed with mean, μ = 60,500 miles

Standard deviations, σ = 2800 miles

We have to determine probability a particular tire of this brand will last longer than 58,400 miles, P( X > 58,400). Using normal distribution the z-score formula is

[tex]z = \frac { X - \mu }{ \sigma}[/tex]

where, X --> observed value

μ --> mean

σ --> standard deviations

Here, X = 58400, substitute all known values in above formula, [tex]z = \frac { 58400- 60500}{ 2800}[/tex]

= - 0.75

Now, the required probability, P( X > 58,400 = [tex]P( \frac { X - \mu }{ \sigma} > \frac { 58400- 60500 }{ 2800})[/tex]

= P(z> -0.75)

Using the normal distribution table, the value P(z> -0.75) is equals to . So, P( X > 58400) = 0.4533. Hence, required probability value is 0.4533.

For more information about normal distribution, visit:

https://brainly.com/question/27275125

#SPJ4

To find the slope of the tangent to the curve r = -6 - 2 cos θ at the value θ = x/2, we first need to find the rectangular coordinates (x, y) using the polar coordinates (r, θ). The rectangular coordinates can be found using the following equations:
x = r * cos(θ)
y = r * sin(θ)

Next, we need to differentiate both x and y with respect to θ:
dx/dθ = dr/dθ * cos(θ) - r * sin(θ)
dy/dθ = dr/dθ * sin(θ) + r * cos(θ)
Now, we find the derivative of r with respect to θ:
r = -6 - 2 cos(θ)
dr/dθ = 2 sin(θ)
Then, we plug in θ = x/2 and evaluate x and y:
x = r * cos(x/2)
y = r * sin(x/2)
Now, we evaluate dx/dθ and dy/dθ at θ = x/2:
dx/dθ = 2 sin(x/2) * cos(x/2) - r * sin(x/2)
dy/dθ = 2 sin(x/2) * sin(x/2) + r * cos(x/2)
Finally, the slope of the tangent (m) is given by:
m = dy/dθ / dx/dθ
Plug in the values of dy/dθ and dx/dθ that we've calculated and simplify to find the slope of the tangent at the given point.

Learn more about tangent here:

https://brainly.com/question/19424752

#SPJ11

The antiderivative of f(x) = ³√x² + x√x is [tex]1/3 x^3/2 (2x^1/3 + 3x^1/2)[/tex] + C.

The antiderivative of a capability is the converse of the subsidiary. As such, assuming that we have a capability f(x) and we take its subordinate, we get another capability that lets us know how the first capability is changing regarding x. The antiderivative of f(x) is a capability that lets us know how the first capability changes as for x the other way. It is additionally called the endless vital of f(x).

Presently, we should view as the antiderivative of the given capability f(x) = ³√x² + x√x. We can separate it into two sections:

f(x) = ³√x² + x√x

=[tex]x^(2/3) + x^(3/2)[/tex]

To see as the antiderivative of [tex]x^(2/3)[/tex], we want to add 1 to the example and separation by the new type:

∫[tex]x^(2/3)[/tex] dx = (3/5)[tex]x^(5/3)[/tex] + C

where C is the steady of incorporation. Also, to view as the antiderivative of[tex]x^(3/2)[/tex], we add 1 to the example and separation by the new type:

∫[tex]x^(3/2)[/tex] dx = (2/5)[tex]x^(5/2)[/tex] + C

where C is the steady of incorporation.

Accordingly, the antiderivative of f(x) = ³√x² + x√x is:

∫f(x) dx = ∫[tex]x^(2/3)[/tex] dx + ∫[tex]x^(3/2)[/tex] dx

= (3/5)[tex]x^(5/3)[/tex] + (2/5)[tex]x^(5/2)[/tex] + C

where C is the steady of incorporation.

To learn more about antiderivative, refer:

https://brainly.com/question/14011803

#SPJ4

Answer:

Step-by-step explanation:

1-1=0

Answer:You will have 0 moms.

Step-by-step explanation:

First you take 1 away from 1.

After that you get your answer of 0.

There are 42 subsets of size two that contain at least one of the elements of {1, 2, 3}.

There are [tex]${8\choose2}=28$[/tex] subsets of size two that can be formed from the set {1, 2, 3, 4, 5, 6, 7, 8}.

To count the number of subsets of size two that contain at least one of the elements of {1, 2, 3}, we can use the principle of inclusion-exclusion.

Let A be the set of subsets of size two that contain 1, B be the set of subsets of size two that contain 2, and C be the set of subsets of size two that contain 3. We want to count the size of the union of these three sets, i.e., the number of subsets of size two that contain at least one of the elements of {1, 2, 3}.

By the principle of inclusion-exclusion, we have:

|A ∪ B ∪ C| = |A| + |B| + |C| - |A ∩ B| - |A ∩ C| - |B ∩ C| + |A ∩ B ∩ C|

To calculate the sizes of these sets, we can use combinations. For example, |A| is the number of subsets of size two that can be formed from {1, 2, 3, 4, 5, 6, 7, 8} with 1 as one of the elements. This is equal to [tex]${3\choose1}{5\choose1}=15$[/tex], since we must choose one of the three elements in {1, 2, 3} and one of the five remaining elements.

Similarly, we have:

|A| = [tex]${3\choose1}{5\choose1}=15$[/tex]

|B| = [tex]${3\choose1}{5\choose1}=15$[/tex]

|C| = [tex]${3\choose1}{5\choose1}=15$[/tex]

|A ∩ B| = [tex]${2\choose1}{5\choose0}=2$[/tex], since there are two elements in {1, 2} that must be included in the subset, and we can choose the other element from the remaining five.

|A ∩ C| = [tex]${2\choose1}{5\choose0}=2$[/tex]

|B ∩ C| = [tex]${2\choose1}{5\choose0}=2$[/tex]

|A ∩ B ∩ C| = [tex]${3\choose2}=3$[/tex], since there are three elements in {1, 2, 3} and we must choose two of them.

Substituting these values into the inclusion-exclusion formula, we get:

|A ∪ B ∪ C|[tex]= 15 + 15 + 15 - 2 - 2 - 2 + 3 = 42[/tex]

Therefore, there are 42 subsets of size two that contain at least one of the elements of {1, 2, 3}.

To learn more about subsets visit: https://brainly.com/question/24138395

#SPJ11

A Z-score represents how many standard deviations an individual data point is from the mean of a dataset. The formula for calculating a Z-score is:

Z = (X - μ) / σ

Where:
- Z is the Z-score
- X is the individual data point
- μ (mu) is the mean of the dataset
- σ (sigma) is the standard deviation of the dataset

If you can provide the data or statistics needed, I'd be more than happy to help you calculate the Z-scores for the given problems.

To learn more about mean, refer below:

https://brainly.com/question/31101410

#SPJ11

The volume of the triangular prism is 360 cubic inches

What is volume of triangular prism?

Volume = Area × Height

Here given, the base is a right triangle with a leg of 8 in. and hypotenuse of 10 in. the height of the prism is 15 in.

We want to find volume of the triangular prism.

We can find the length of the other leg of the triangle,

Height ² + Base² = Hypotenuse ²

[tex]a^2 + b^2 = c^2 \\ 8^2 + b^2 = 10^2 \\ 64 + b^2 = 100 \\ b^2 = 36 \\ b = 6[/tex]

So the base triangle is 6 in.

Area of a triangle = 1/2 × base × height

A = 1/2 × 8 in. × 6 in.

A = 24 in²

Now volume of the prism,

V = A × height

V = 24 in² × 15 in

V = 360 in³

Therefore, the volume of the triangular prism is 360 cubic inches (to the nearest tenth).

Learn more about triangular prism here,

https://brainly.com/question/31342575

#SPJ1

On solving the query we can say that The trapezium is 16 cm tall as a of result.

Mathematics is concerned with numbers and their variations, equations and related structures, shapes and their places, and possible placements for them. The relationship between a collection of inputs, each of which has an associated output, is referred to as a "function". An relationship between inputs and outputs, where each input yields a single, distinct output, is called a function. Each function has a domain and a codomain, often known as a scope. The letter f is frequently used to represent functions (x). X is the input. The four main types of functions that are offered are on functions, one-to-one functions, many-to-one functions, within functions, and on functions.

The formula for a trapezoid's area is:

Area is equal to (b1+b2)*h/2.

where h is the height of the trapezium, and b1 and b2 are the lengths of the two bases.

The trapezoid's size is 48 cm2, and its bases (b1) and (b2) are each assigned lengths of 5 cm and 7 cm, respectively. In order to solve for the height (h), we may enter these values into the formula as follows:

48 = (5 + 7) * h / 2

When we simplify the equation, we obtain:

48 = 6h / 2

48 = 3h

h = 48 / 3

h = 16

The trapezium is 16 cm tall as a result.

To know more about function visit:

https://brainly.com/question/28193995

#SPJ1

There are 13 students in the group who are not enrolled in either a

mathematics course or a physics course.

We can solve this problem using the principle of inclusion-exclusion,

which states that the size of the union of two sets is given by:

|A ∪ B| = |A| + |B| - |A ∩ B|

where |A| represents the size (number of elements) of set A, and |A ∩ B|

represents the size of the intersection of sets A and B.

In this case, we want to find the number of students who are not enrolled

either a mathematics course or a physics course.

Let M be the set of students enrolled in a mathematics course, and let P

the set of students enrolled in a physics course. Then the number of

students who are not enrolled in either course is:

|not enrolled| = |total| - |M ∪ P|

We are given that |M| = 15, |P| = 10, and |M ∩ P| = 5. To find |M ∪ P|, we

use the inclusion-exclusion principle:

|M ∪ P| = |M| + |P| - |M ∩ P|

= 15 + 10 - 5

= 20

So the number of students who are not enrolled in either course is:

|not enrolled| = |total| - |M ∪ P|

= 33 - 20

= 13

for such more question on word problem

https://brainly.com/question/13818690

#SPJ11

a)  the determinant of J is 1xT - 0x2 = 0, which means that the area of O(R) is 0.
b)  the determinant of J is 1x1 - 0x2 = 1, which means that the area of Q(R) is the same as the area of R, which is (13-1) x (18-6) = 144.

To find the area of O(R) using the Jacobian, we need to calculate the determinant of the Jacobian matrix of Q(u,v):

J = [∂(u+30)/∂u   ∂(u+30)/∂v  ]
    [∂(2u+Tv)/∂u  ∂(2u+Tv)/∂v]

= [1  0]
  [2  T]

(a) For R = [0,9] x [0,7], we have T = 0 since there is no v-dependence in the range of R. Therefore, the determinant of J is 1xT - 0x2 = 0, which means that the area of O(R) is 0.

(b) For R = [1,13] x [6,18], we have T = 1 since v ranges from 6 to 18. Therefore, the determinant of J is 1x1 - 0x2 = 1, which means that the area of Q(R) is the same as the area of R, which is (13-1) x (18-6) = 144.

learn more about the Jacobian

https://brainly.com/question/29855578

#SPJ11

a) First, let's define the null hypothesis (H0) and alternative hypothesis (H1).

H0: The average customer age is 35 years or less (μ ≤ 35)
H1: The average customer age is greater than 35 years (μ > 35)

b) Now, we need to perform a hypothesis test to determine if there's enough evidence to refute the store's claim. We'll use a one-sample z-test with an alpha level of 0.05.

Step 1: Calculate the test statistic:
z = (sample mean - population mean) / (standard deviation / √sample size)
z = (38.5 - 35) / (9 / √43)
z ≈ 2.26

Step 2: Determine the critical z-value for a one-tailed test with alpha = 0.05:
For a one-tailed test with an alpha level of 0.05, the critical z-value is 1.645.

Step 3: Compare the test statistic to the critical z-value:
Since our calculated z-value (2.26) is greater than the critical z-value (1.645), we reject the null hypothesis.

Based on this test, there is enough evidence to refute the age claim made by the sporting goods store. The sample suggests that the average customer age is greater than 35 years.

Learn more about Statistical Tests here: brainly.in/question/9402988

#SPJ11

Answer math suck a

Step-by-step explanation:

[tex]f(1,-2) = 1 + e^-2.[/tex]

To determine f(1,-2), we simply need to substitute 1 for x and -2 for y in the given function [tex]f(x,y) = x^2x^3+e^xy.[/tex]

[tex]f(1,-2) = 1^2 * 1^3 + e^(1*-2)[/tex]

[tex]= 1 + e^-2[/tex]

Therefore, [tex]f(1,-2) = 1 + e^-2.[/tex]

To know more about  function, refer here:

https://brainly.com/question/12431044

#SPJ11

The percentage of absent employees that are on the night shift is  56.25%.

To find the percent of absent employees on the night shift, we'll first calculate the percentage of employees who are absent from both shifts, and then use that information to find the desired percentage.

1. We know that 70% of the employees work the day shift, so the remaining 30% work the night shift.

2. On any given day, 1% of day-shift employees are absent, and 3% of night-shift employees are absent.

3. Calculate the percentage of absent employees from both shifts:

(1% of 70%) + (3% of 30%).

This would be (0.01 * 70) + (0.03 * 30) = 0.7 + 0.9 = 1.6%.

4. Now, we'll find the percent of absent employees on the night shift out of the total absent employees. Since 3% of night-shift employees are absent, and there are 30% night-shift employees, the percentage of absent night-shift employees out of total employees is (0.03 * 30) = 0.9%.

5. Finally, divide the percentage of absent night-shift employees by the total percentage of absent employees and multiply by 100 to get the answer: (0.9 / 1.6) * 100 = 56.25%.

So, 56.25% of absent employees are on the night shift.

Learn more about Percentage:

https://brainly.com/question/24877689

#SPJ11

The 99% confidence interval for the mean score of all students is constructed as (85.497, 96.5026).

Given,

Sample size, n = 30

Sample mean, x = 91

Standard deviation, s = 11.7

The 99% confidence interval for the mean score of all students can be calculated as,

x ± z [tex]\frac{s}{\sqrt{n} }[/tex]

z value for 99% confidence interval = 2.576

Confidence interval = (91 ± (2.576 × 11.7/√30)

                                 = (91 ± 5.5026)

                                 = (85.497, 96.5026)

Hence the confidence interval is (85.497, 96.5026).

Learn more about Confidence Interval here :

https://brainly.com/question/2598134

#SPJ4

The company should hire students for 10 hours of labor per day to maximize profit.

To determine the number of hours (L) of labor the company should use per day to maximize profit, we need to consider the revenue, cost, and profit functions, and then find the critical points.

1. Revenue: The company sells 3L^(2/3) Kg of wild mushrooms at $15.00 per Kg.

So, the revenue function R(L) = 15 * 3L^(2/3) = 45L^(2/3).

2. Cost: The company pays $6.00 per hour for L hours of labor.

So, the cost function C(L) = 6L.

3. Profit: The profit function P(L) is the difference between revenue and cost:

P(L) = R(L) - C(L) = 45L^(2/3) - 6L.

4. To maximize profit, we need to find the critical points by taking the derivative of the profit function and setting it equal to zero:

P'(L) = d(45L^(2/3) - 6L) / dL = 0.

5. Derivative:

P'(L) = (2/3)*45L^(-1/3) - 6.

6. Solve for L:

Set P'(L) = 0 and solve for L:

(2/3)*45L^(-1/3) - 6 = 0.

By solving this equation, we find that L ≈ 9.58 hours.

Since the company cannot hire a fraction of an hour, it should hire students for 10 hours of labor per day to maximize profit.

Learn more about Profit:

https://brainly.com/question/19104371

#SPJ11

False.

Mutually exclusive means that the occurrence of event A and the occurrence of event B cannot happen at the same time.

In this case, the occurrence of event A does affect the probability of the occurrence of event B because if event A occurs, then event B cannot occur.

Independent means that the occurrence of event A has no effect on the probability of the occurrence of event B. In this case, the occurrence of event A does not prevent the occurrence of event B.

To learn more about probability, refer below:

https://brainly.com/question/30034780

#SPJ11

The Marshall Plan was an economically strategic maneuver designed to rebuild Western European capitalism. It aimed to support the recovery and stability of European countries after World War II and prevent the spread of communism.

The Marshall Plan violated the philosophy of containment by providing economic aid to European countries, which some saw as indirectly aiding the spread of communism. It was also an economically strategic maneuver to rebuild Western European capitalism and prevent the spread of communism. Additionally, it was an offshoot of the Displaced Persons Plan, which aimed to help refugees and displaced persons in Europe after World War II.

Know more about Marshall Plan here;

https://brainly.com/question/22602380

#SPJ11

The value of the integral from 0 to 1 of e⁻⁴ˣ with respect to x is approximately 0.284.

To begin, we need to understand what the integrand represents. The function e⁻⁴ˣ is an exponential function, where the base of the exponent is e, a mathematical constant approximately equal to 2.718. The exponent is a function of x, meaning that as x changes, the value of the exponent changes accordingly.

To evaluate this integral, we can use the formula for integrating exponential functions. The integral of eⁿˣ with respect to x is equal to (1/n)eⁿˣ + C, where C is a constant of integration. Using this formula, we can integrate e⁻⁴ˣ with respect to x to get:

∫e⁻⁴ˣ dx = (-1/4)e⁻⁴ˣ + C

Next, we can evaluate this expression at the upper and lower limits of integration, which are 0 and 1, respectively:

(-1/4)e⁻⁴ˣ evaluated from 0 to 1 = (-1/4)(e⁰ - e⁻⁴) = (-1/4)(1 - 1/e⁴) ≈ 0.284

To know more about integral here

https://brainly.com/question/18125359

#SPJ4

Complete Question:

Evaluate the Integral integral from 0 to 1 of e⁻⁴ˣ with respect to x

The value of the given indefinite integrals are 4x⁴ + 3x³ + 3x² - 3x² + 3x + C and  [tex](V/2)y^{2} - 1/y + (1/3)e^{(3y) }+ C.[/tex]

Let us implement the principles to evaluate the indefinite integral, so that their values can be derived
a. integral (16x³ + 9x² + 9x² - 6x + 3)dx
= 4x⁴ + 3x³ + 3x² - 3x²+ 3x + C
here C is the constant of integration
Now let us proceed to tye next part of the question
b. integral [tex](Vy + 1/(y^{2}) + e^{(3y)}) dy[/tex]
[tex]= (V/2)y^{2} - 1/y + (1/3)e^{(3y)} + C[/tex]
here C is the constant of integration
Indefinite integral refers to a form of function which doesn't have limits to describe the family of function it belongs to.

To learn more about indefinite integral
https://brainly.com/question/27419605
#SPJ4

The value of y for the function y = cos(-60°) is y = -1/2, option A is correct.

An equation with trigonometric functions that holds true for all of the variables in it is known as a trigonometric identity. A few normal geometrical characters incorporate the Pythagorean personality, the total and distinction characters, and the twofold point characters.

Using the unit circle and the trigonometric identity for cosine, we know that:

cos(-60°) = cos(360° - 60°)

               = cos(300°)

               = cos(180° + 120°)

               = -cos(120°)

               = -1/2

Therefore, the value of y for the function y = cos(-60°) is y = -1/2.

To know more about trigonometric functions, visit:
https://brainly.com/question/25618616
#SPJ1