What is the relationship between cos(90degrees) and cos(-90°)? ​

Answers

Answer 1

Answer:

The relationship between the two is that they are equal.

Step-by-step explanation:

Since y = cosx is a even function, that means that cosx = cos(-x). Therefore, cos 90 degrees = cos -90 degrees.

We can also test this out:

cos 90 = 0

cos -90 = cos 270 = 0

Therefore, this came to the same conclusion as our first solution.

I hope this helps! :)


Related Questions


What is the measure of angle A?*
A.27
B.36
C.63
D.216

Answers

Answer:

B. 36

Step-by-step explanation:

Answer:

36 degrees

Step-by-step explanation:

117 + 27 = 144

180 - 144 = 36

What is the measure of DC?

1. 61
2. 119
3. 122
4. 360

Answers

Answer:

61 it is because it is in first

HURRRY FIRST GETS BRAINLIESTTTT

Answers

Answer:

5

Step-by-step explanation:

because others are already there

Answer:5

Step-by-step explanation:

Please help me, please please help ASAP!!!

Answers

basically u evaluate it into (3⁶y⁵)² then use the properties of exponents to simplify to (729y⁵)² and then ur answer is 729²y¹⁰ or in other words, 3¹²•y¹⁰ so ur answer is B.

The following table shows the expressions that represent the sales of two companies:

Company: А B

Sales: 110(0.70)^x 430(1.90)^x


Which company has the largest percent of increase?

-Company A
-Company B
-Both Company A and Company B
-Neither Company A nor Company B

Answers

9514 1404 393

Answer:

  company B

Step-by-step explanation:

The growth rate is 1 less than the growth factor. The growth factor is the base of the exponential term.

Company A

  growth factor: 0.70

  growth rate: 0.70 -1 = -0.30 = -30%

__

Company B

  growth factor: 1.90

  growth rate: 1.90 -1 = 0.90 = 90%

__

Company B has a higher growth rate than Company A. (Company A has decreasing sales, not increasing.)

Company B has a higher growth rate than Company A.

A plane traveled 322 miles from El Paso in a direction 57° northeast. What is height of the plane, to the nearest mile?​

Answers

Answer:

The height of the plane to the nearest mile is 175 miles

Step-by-step explanation:

Here, we want to calculate the direction of the plane

A diagrammatic representation of this will be interesting

Please check an attachment for this

From the diagram, consider the triangle OAB

we want to calculate the height of this triangle

We simply apply trigonometric identity

Thus, we have that;

Sine 33 = h/322

h = 322 sine 33

h = 175.37

h is approximately 175 miles

A positive times a negative is a negative and the same is true for dividing integers true or false​

Answers

Answer:

The statement is true

Step-by-step explanation:

Rita is planting saplings along her garden fence. When she started, she had x packages of saplings with 5 saplings per package. She planted 15 saplings and has at most 20 left. How many packages of saplings did she start with? What would the solution look like on a number line graph?
When Rita started, she had
packages of saplings. The solution can be represented as
with an arrow to the
.

Answers

Answer:

If we represent x (number of packages of saplings) on a number line graph, it will start on number 4 (number of packages Rita still has) then moves to the right to number 7, that is the number of packages when Rita started to plant.

Step-by-step explanation:

i like yo cut g'slol

Answers

I like urs tooth u ritutit twas tthe was the one that had a baby boy and a girl that had

jeff is buying books at a used bookstore. he wants to approximate the total cost of his purchase before checking out. which amount is the most reasonable approximation of the total price of the 5 books?

Answers

Reasonable approximation of total price of 5 books = 5 x price per book

Calculation of Total Value of Books

Total Value = Quantity x Price

Given : Quantity, of books = 5

So, putting 'Q' in Total Value

Total Value = 5 x price per book

For example : If price per book = 10. Then, Value = 5 x 10 = 50

To learn more about Total Value, refer https://brainly.com/question/14411378?referrer=searchResults

Answer: $35.00

just did it

Step-by-step explanation:

Billy's Bagels sells bagels and sandwiches. The profit on every bagel is $2 and the profit on every sandwich is $3. Billy made a profit of $1,560 last week.
a. Write an equation in a standard form that represents Billy's profits last week, where x is the number of bagels sold and y is the number of sandwiches sold.
b. Change the equation for Billy's profit to slope-intercept form.
c. Write the equation in function notation. HELP!!

Answers

Answer:

a. 2x + 3y = 1560

b. y = -2x/3 + 520

c. f(x) = -2x/3 + 520

Step-by-step explanation:

a. We are told that the profit on each Bagel is $2 for x bagels and $3 for each sandwich is $3

for a total of y sandwiches

So we have;

2x + 3y = 1560

b. Slope intercept form is generally

y = mx + b

So we have

3y = -2x + 1560

y = -2x/3 + 520

c. In function notation;

f(x) = -2x/3 + 520

Please answer correctly will mark brainliest and follow thank you ;)

Answers

Answer:

76m

Step-by-step explanation:

Solve perimeter of both rectangles and add

Answer:

238 meters

Step-by-step explanation:

Perimeter? The equation is P = 2 ( l * w )

So lets cut this irregular shape into 2 rectangles.

I added a picture to show you.

So on rectangle is 7 by 11 and the other is 7 by 6.

So lets find the perimeter of the larger rectangle first.

P = 2 ( 11 * 7 )

P = 2 ( 77 )

P = 154

Now the smaller one

P = 2 ( 7 * 6 )

P = 2 ( 42 )

P = 84

Now to find the full perimeter, add both perimeters together

P = 154 + 84

P = 238

238 meters

Don't be afraid to reach out with further questions! Hope this helps!

Write 5/3 as a mixed number.

Answers

Answer:

1 [tex]\frac{2}{3}[/tex]

One and two thirds

Step-by-step explanation:

Divide the numerator by 3

Write down the whole number answer

Use the remainder as the new numerator over the denominator, which is the fraction part of the mixed number.

I hope this helps!!

The fraction 5/3 as a mixed number is  [tex]1\frac{2}{3}[/tex].

To write the fraction 5/3 as a mixed number, we need to find the whole number and the proper fraction parts.

A mixed number is a combination of a whole number and a proper fraction (where the numerator is smaller than the denominator).

Divide the numerator (5) by the denominator (3).

5 ÷ 3 = 1 with a remainder of 2

The quotient (1) represents the whole number part, and the remainder (2) becomes the numerator of the proper fraction.

The denominator remains the same, which is 3.

Hence, the mixed number representation of 5/3 is [tex]1\frac{2}{3}[/tex].

To learn more on Fractions click:

https://brainly.com/question/10354322

#SPJ6

I literally had one more then someone gave the wrong answer so will give crown

Answers

Answer:

a) x=3

y= 4+4*3

=16

b) x=4

y= 4+4*4

= 20

c) x=7

y= 4+4*7

= 32

d) x=8

y= 4+4*8

= 36

Hope it will help you.......

THE QUESTION IS EASY PLS ANSWER THE QUESTION . BUT I DONT KNOW PLSS

Answers

Answer:

x=116

Step-by-step explanation:

180-C will get you F since they are adjacent angles, which would be 116.  We know that the opposite angles of a parallelogram are equal, so x=116

Well you can determine the unknown angle in the triangle by knowing that a triangles angles add up to 180.
64 + 52 + (Unknown) = 180
Unknown = 64
Unknown and the angle of F create a 180 angle relationship. Therefore,
F = 180-64 —> 116
Angle D has a 180 angle relationship with F and so does X with D, so F and X are the same.
Answer: 116

Mr.davis works for $2,400 per month plus a 10 percent commission on his total sales.he wants to earn at least $3,000 next month. Which inequality can be used to determine the amount of sales,s,he needs to meet his goal?

Answers

Answer:

5th and 6th of August and will not me I will get

Step-by-step explanation:

ok is a theme for all of us who 6th assignment and we are going too far from changes to our schedule so we will not have a party

Help, this is a algebra question. Answer ASAP if you know the answer. I will give brainliest to whoever responds correct.

Answers

Answer:

B. Substitute 0 for y and solve for x.

Step-by-step explanation:

Finding the zeroes means solving for x when y = 0.

Which expression is equivalent to 10 - 3(4x + 8)?

A.
-12x - 14

B.
12x + 14

C.
14 - 12x

D.
-14 + 12x

Answers

Answer:

10-3(4x+8)

=10-12x-24

=-12x-14

The answer is A. -12x-14

A camper attaches a rope from the top of her tent, 4 feet above the ground, to give it more support. If the rope is 8 feet long, about how far will the stake need to be from the middle of her tent?

A. 8.9 ft
B. 4 ft
C. 12 ft
D. 6.9 ft

Answers

Answer:

6.9 ft

Step-by-step explanation:

The Pythagorean Theorem. :)

a^2 + b^2 = c^2

4^2 + b^2 = 8^2

16 + b^2 = 64

b^2 = 48

D = 6.928

<3 Enjoy,

    Dea

The length of the stake needs to be from the middle of her tent will be 6.9 feet. Then the correct option is D.

What is a right-angle triangle?

It is a type of triangle in which one angle is 90 degrees and it follows the Pythagoras theorem and we can use the trigonometry function. The Pythagoras is the sum of the square of two sides is equal to the square of the longest side.

A camper attaches a rope from the top of her tent, 4 feet above the ground, to give it more support. If the rope is 8 feet long.

Then the length of the stake needs to be from the middle of her tent will be

We have

P = 4 ft

H = 8 ft

Then the base is given by the Pythagoras theorem.

B² = H² - P²

B² = 8² - 4²

B² = 64 - 16

B² = 48

B = 6.9 ft

More about the right-angle triangle link is given below.

https://brainly.com/question/3770177

if f(x)=5x^4+3, then what is the remainder when f(x) is divided by x-1?

Answers

8


This is actually fairly simple. If you take the x-1 and set it equal to 0 you get 1. And if you plug that value into the x you get 8, which is the remainder. This is called the remainder value theorem.

Answer:

8

This is actually fairly simple. If you take the x-1 and set it equal to 0 you get 1. And if you plug that value into the x you get 8, which is the remainder. This is called the remainder value theorem.

Step-by-step explanation:

is -4x-8=4x+8 one solution no solution or many solutions

Answers

one solution

-8x=-16
x=-2

Answer:

One solution.

Step-by-step explanation:

This question has different coefficients so it has one solution.

please help!
the question is in the picture because i can’t type it out :)

Answers

Answer:

x=3

y=2

Step-by-step explanation:

-3 force F equals 5/4 what is F

Answers

Answer:

uhhh

Step-by-step explanation:

what is the first step in solving this equation?
5x+7=12​

Answers

Answer:

Subtract 7 from 12.

Step-by-step explanation:

Answer:

subtract 7 from both sides.

5x = 5

x = 1

what is 20r^2+11r-3=0 for all real solutions?
please answer fast

Answers

Answer:

r=0.2

r= -0.75

Step-by-step explanation:

if im wrong im sorry


The difference of two numbers is 308. The smaller of the numbers is 730. What is
the other number?

Answers

Answer:

1038

Step-by-step explanation:

730+308= the big number

Answer:

1038

Step-by-step explanation:

Please help me please

Answers

Answer:

the answer is A ...........

can yall help me or not?

Answers

Answer

desktop for 1st because it sold less computers and made more money.

for 2nd laptops 1.53 and computer 4.34

Step-by-step explanation:

The graph shows the heigh if a tree ever time. What can you reduce the rate of change to be from 2years to 4years

Answers

Answer:

the question sounds confusing but I believe you would reduce the time or the x value so that the years are reduced.

what is 8 - 7 1/4 i need the answer fast

Answers

Answer:

3/4

Step-by-step explanation:

i think it is 6.25 :)
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