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

Which number represents 50% of 74?
35
37
38
39

Answers

Answer: 37!!!

Step-by-step explanation:

1. 50% equals .5 in decimal form.

When converting a percentage to decimal, divide by 100 or move the decimal point to the left twice.

2. The word of means multiply so we multiply .5 by 74.

3. We get 37!

hope this helped, brainliest plsss :))))

I was the first one!

37! 7+7=14 and carry the one over so 3+3+1=7 so 50% of 74 is 37

The mural of your school mascot is $4$ feet by $12$ feet and is to be completely framed using a single row of square tiles each $2$ inches on an edge. If the tiles are $\$0.10$ each, find the cost, in dollars, of the tiles needed to frame the mural.

Answers

Answer:

$19.2

Step-by-step explanation:

The school mascot is rectangular in nature.

Perimeter P = 2(L+W)

L is the length = 4feet

W is the width = 12 feet

Perimeter = 2(4+12)

Perimeter = 2(16)

Perimeter  = 32 feet

Convert to inches

12in = 1feet

x = 32 feet

Cross multiply

x = 12 * 32

x = 384in

Hence the perimeter of the school mascot is 384in

If it is to be completely framed using a single row of square tiles each 2inches on an edge

2 inches = 1 tiles

384inches = y tiles

Cross multiply

2y = 384

y = 384/2

y = 192 tiles

The number of tiles needed is 192 tiles

Get the cost of 192tiles

If the tiles are $0.10 each. 192 tiles will cost 192 * 0.1 = $19.2

Hence the cost of the tiles needed is $19.2

Which statement is true about the value of |-5|? It is the distance that -5 is form 0 on the number line. It is the distance that -5 from 5 on the number line. It is less than 5. It is greater than 5.

Answers

Answer: It is the distance that -5 is form 0 on the number line

Step-by-step explanation:

We can define the absolute value of any number:

IxI as:

"The distance between the point x and the origin in the coordinate axis"

If we are in one dimension, x is just a value, and the coordinate axis will be a number line.

Then we could rewrite this as:

"is the distance between the value x and the 0 in the number line"

So:

IxI = x if x > 0

IxI = -x if x < 0.

Then:

I -5 I

Is the distance between the number -5, and the 0 in the number line, and this is:

I - 5 I = 5.

The correct option is:

"It is the distance that -5 is form 0 on the number line"

Answer:

Answer: It is the distance that -5 is form 0 on the number line

Step-by-step explanation:

thank yaal for answerin ;)

Answers

Answer:

B is the answer

Step-by-step explanation:

Rigid motion they don't change shape or size just move around.

Can somebody help me out with this ??? please .

Answers

Answer:

Step-by-step explanation:

you have alternate angles, which are equal

6z-91=71

6z=71+91=162

z=162/6=27

z=27

y=180-27=153

help please? i am a little bit confused

Answers

d: 1.25

c: .035

b: .70

a: .23

these are just my guesses but if there right then I hope this helps. I don't know it but these are my best affiliations.

-4x + 7y = 18
4x - y = -3
solve using either the substitution or elimination method
pls show solving steps
will mark brainliest​

Answers

Answer:

​​

Step-by-step explanation:

Subtract 7y7y from both sides.

-4x=18-7y−4x=18−7y

2 Divide both sides by -4−4.

x=-\frac{18-7y}{4}x=−

​4

​18−7y

Use the function g(x) = -5x + 17 to answer the questions.
Part B
What is g(-5)?
a
-60
b
--8
с
12
42

Answers

Answer:

42

Step-by-step explanation:

g(-5)=-5.-5+17

=25+17

=42

Answer:

42

Step-by-step explanation:

g(x) = -5x+ 17

g(-5) = -5 × -5 +17

g(-5) = 42

find the area of Rhombus if its diagonals measure 18 cm and 21 cm​

Answers

Answer:

189 cm²

Step-by-step explanation:

The area (A) of a rhombus is calculated as

A = [tex]\frac{1}{2}[/tex] × product of diagonals

   = [tex]\frac{1}{2}[/tex] × 18 × 21 = 9 × 21 = 189 cm²

if x + y = x y = 5 then x ^2 y + X Y ^ 2 equals​

Answers

Answer:

25

Step-by-step explanation:

Note x^2y + xy^2 = xy(x+y)

We know xy = 5 and x+y = 5, so

5*5=25

The first person to answer my questions wins a brainlist IF THERE RIGHT. alright

I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I?

This riddle relies on tricking you into thinking about ears and a mouth. You get a tiny hint about wind to encourage you to think broadly and avoid the literal.

Answers

Answer:

An Echo

Step-by-step explanation:

If the relative frequencies are 0.48 and 0.52, which
conclusion is most likely supported by the data?
O There is likely an association between the
categorical variables because the relative
frequencies are similar in value.
O An association cannot be determined between the
categorical variables because the relative
frequencies are similar in value.
O An association cannot be determined between the
categorical variables because the relative
frequencies are not similar in value.
O There is likely an association between the
categorical variables because the relative
frequencies are both close to 0.50.

Answers

Answer:The Last One

Step-by-step explanation:

Option (B) an association cannot be determined between the categorical variables because the relative frequencies are similar in value is the correct answer.

What is relative frequency?

The relative frequency of an event is defined as the number of times that the event occurs during experimental trials, divided by the total number of trials conducted. The sum of all relative frequencies will be one.

For the given situation,

The relative frequencies are 0.48 and 0.52.

A two-way frequency table can be used to show, analyze, and examine the relationships that exists between two categorical variables.

The two relative frequencies have the values that are similar to (close to) each other. So, there will be no association between the categorical values.

Hence we can conclude that option (B) an association cannot be determined between the categorical variables because the relative frequencies are similar in value is the correct answer.

Learn more about relative frequencies here

https://brainly.com/question/12414001

#SPJ2

Can someone help me please

Answers

Answer:

D

Step-by-step explanation:

The answes D kiddo cuz

10 x 3 = 30 and 17 x 3 = 51

D is the correct answer

Given f of x equals 6 1 minus x , what is the value of f of negative 6 ?

Answers

Answer:

answer will be 67

Step-by-step explanation:

f(x) = 61 - x

x = -6

hence we substitute the value of x in f(x)

f(-6) = 61 - (-6)

= 61 + 6

= 67

The value of the function f(x) = 6(1 - x) at x = -6 will be given 42.

What is a function?

A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The function is given below.

f(x) = 6(1 - x)

The value of the function at x = -6 will be given as,

f(-6) = 6[1 - (-6)]

Simplify the equation, then we have

f(-6) = 6[1 - (-6)]

f(-6) = 6(1 + 6)

f(-6) = 6 × 7

f(-6) = 42

The value of the function f(x) = 6(1 - x) at x = -6 will be given 42.

More about the function link is given below.

https://brainly.com/question/5245372

#SPJ2

Whats the slope of (6,0) and (2,-2)

Answers

A. /3/2



Is the answer.

A major arc will have a measure that is
A. less than 180°
B. equal to 180°
C. greater than 180°​

Answers

I think it’s C. Greater than 180 I’m not sure though don’t get mad if I’m wrong

9514 1404 393

Answer:

  C.  greater than 180°

Step-by-step explanation:

Arcs are classified as "major" or "minor" depending on whether they are more or less than half a circle. A major arc is more than half a circle so is greater than 180°.

15 is what % of 60:(

Answers

Answer:

25%

Step-by-step explanation:

Given that triangle RST is isosceles, find the value of ZS

Answers

Answer:

120°

Step-by-step explanation:

[tex]m\angle S = 180\degree - 2\times 30\degree \\\\

m\angle S = 180\degree - 60\degree \\\\

\huge\purple {\boxed{m\angle S = 120\degree}} [/tex]

You and two friends buy snacks for a field trip. Using the
information given in the table, determine the price per pound for mixed nuts,
granola, and dried fruit.

Answers

Answer:

13.15

Step-by-step explanation:

FG is the geometric mean of which two segments

Answers

Answer:

EG and GH

Step-by-step explanation:

FG is the geometric mean of EG and GH segments.

FG is the geometric mean of EG and GH by using the Right triangle altitude theorem.

Important information:

The given figure of a triangle EFH.Right triangle altitude theorem:

According to the Right triangle altitude theorem, if an altitude is drawn on the hypotenuse of a right triangle, then the altitude of a right triangle is the geometric mean of the two segments of the hypotenuse.

From the given figure it is clear that,

Triangle EFH is a right triangle because angle F is a right angle.FG is the altitude on the hypotenuse.Two segments of the hypotenuse are EG and GH.

Using the Right triangle altitude theorem, we get FG is the geometric mean of EG and GH.

Find out more about 'Right triangle altitude theorem' here
https://brainly.com/question/14357999

Which of the following statements about rational numbers is false?

A. Every natural is a whole number, integer, and a rational number.

B. Every integer is a rational number.

C. A natural number is also a whole number.

D. Every rational number is also an integer

Answers

Answer:

D. Every rational number is also an integer

Step-by-step explanation:

Some rational numbers are integers, but not all of them

this one alsooooooooo

Answers

I believe the answer is segment FD

Answer:

the answer is cd

Step-by-step explanation:

what’s the value for x

Answers

Answer:

53

Step-by-step explanation:

move 82 down next to (2x-8)

if 82+2x-8 is 180, x is 53

Answer:

2x-8=98

2x=106

×=53 is the right answer

Randall graphed the equation y=-2x+3 as follows:

Did Randall correctly graph the equation?
A. Yes he correctly graphed the equation B. No he graphed the line with a slope of 2 instead of -2 C. No, Randall graphed the line with a slope of -1/2 instead of -2 D. No, Randall graphed an x-intercept of (3,0) instead of y-intercept (0,3)

Answers

Answer:

C.

Step-by-step explanation:

Hope I could help :)))

Mary used one big bag of flour. She baked four loaves of bread.​ Then, she used the remaining flour to make 48 muffins. How much flour was in the bag when Mary​ began? Plz help!!!! I have 20 minutes left

Answers

Answer is 11.

Step-by-step explanation:

Maria used two loaves of bread , One loaf is equal=2 1/4 cups so two becomes 2 ×2 1/4= 9/2

Maria makes the remaing 48 muffins of the flour left so,

One muffin is equal 3 1/4 cups so two becomes 2×3 1/4=13/2

Add both of them

9/2+13/2=11

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answers

Answer:12x^3y^5

Step-by-step explanation:

Answer:

[tex]\huge\boxed{12x^3y^5}[/tex]

Step-by-step explanation:

[tex]4x^2y^3\times3xy^2=(4\cdot3)(x^2\cdot x)(y^3\cdot y^2)=12x^{2+1}y^{3+2}=12x^3y^5[/tex]

Geometry: The Expression 15×x×6 represents the volume of a rectangular prism with a length of 15, a width of x, and a height of 6. Simplify the expression.
1) 21x
2) 90x
3) 21/x
4) 90/x

Answers

Step-by-step explanation:

[tex]15 \times x \times 6 \\ \ \\ = 15 \times 6 \times x = 90x[/tex]

What is the number of terms in this expression?
+4.6
Enter your answer in the box.

Answers

Answer:

joe mama

Step-by-step explanation:

e - i = 5
e + 3i = 9
e value =
i value =
What is the answer

Answers

Answer:

e value = 6

i value = 1

Step-by-step explanation:

The system of equation are;

e - i = 5...(1)

e + 3·i = 9...(2)

Making e the subject of equations (1) and substituting the value of e equation (2) gives;

From equation (1), e - i = 5, we have, e = 5 + i

Substituting the value of e in equation (2), e + 3·i = 9 gives;

e + 3·i = (5 + i) + 3·i = 5 + 4·i = 9

4·i = 9 - 5 = 4

i = 4/4 = 1

i = 1

From e = 5 + i, we have;

e = 5 + i = 5 + 1 = 6

e = 6

Therefore;

e value = 6

i value = 1

Find the total cost of buying a product that cost $12 if it is 25% off. DO NOT PUT A $. Only numbers.

Answers

Answer:

the answer will be 9 dollars

Answer:   9

Explanation:

The discount of 25% off means you save 0.25*12 = 3 dollars, meaning the final cost is 12-3 = 9 dollars.

Or you can think of it like this: if you save 25%, then you still pay the remaining 75%. So 0.75*12 = 9 dollars is the total cost.

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