The value of cosine is undefined at pi and 2pi radians.
TRUE
FALSE

Answers

Answer 1

Answer: False

Step-by-step explanation:

False, the value of cosine at pi and 2pi is equal to -1 and 1 respectively. You can test this by using the pi circle or a calculator. Let pi = 180 degrees. Cosine is always defined and alternates between 1 and -1.


Related Questions

Mr. Trainer is building a bookcase. He has two wooden boards that are each 8 feet long. He needs to cut the wooden boards into pieces that are 16 inches long. What is the greatest number of 16-inch pieces that Mr. Trainer can cut from the two wooden boards? (1 foot = 12 inches)

Answers

Answer:

12

Step-by-step explanation:

Length of one of the boards = 8 feet

Converting to inches

[tex]1\ \text{foot}=12\ \text{inches}\\\Rightarrow 8\ \text{feet}=8\times 12=96\ \text{inches}[/tex]

One cut is 16 inches

So, we divide the length of the board by 16

[tex]\dfrac{96}{16}=6[/tex]

So, one board is cut into 6 pieces.

The other board is also 8 feet long.

So, the number of pieces the other board is cut into is also 6.

Hence, a total of [tex]6+6=12[/tex] pieces of each 16 inches long can be cut from the two boards.

The price of a train ticket consists of an initial fee plus a constant fee per stop.
The table compares the number of stops and the price of a ticket (in dollars).
Stops. Price(dollars)
3. 6.50
7. 12.50
11. 18.50
What is the fee per stop?

Answers

I believe the answer is 2.16

pla help asap giving 15 points serious people only​

Answers

Answer:

3b+17

Step-by-step explanation:

First you distribute

=(3)(b) + (3)(4) + 5

=3b + 12 + 5

Then you combine the like terms:

=3b + 12 + 5

=(3b) + (12 + 5)

=3b + 17

Answer:

3b+17

Step-by-step explanation:

3(b+4)+5

3b+12+5

3b+17

The average distance from the Sun to Mars is 22,793, 910,000,000 centimeters.

The conversion factors between centimeters and four other units of measure are shown below.

9.46. 10^17 cm = 1 light-year
1.50.10^13 cm = 1 astronomical
1 . 10^5 cm = 1 kilometer
1. 10^2 = 1 meter

For the distance to be expressed as x units of measure, where 1 < x < 10, which unit of measure must be used?

A Light-years
B) Astronomical units
C)Kilometers
D) Meters​

Answers

D would be the correct answer

If a box of wheat crackers contains 6 servings and has a total of 420 calories. Find the number of calories in 1 serving.

Answers

Step-by-step explanation:i think you have to divide then mulitiply

What percent is represented by the shaded area?

Answers

Answer:

152%

Step-by-step explanation:

hope this helps!

please mark me as brainliest! thanks!

what is 31 divide 8835
and 27 divide 4725
and plss show work thx :)

Answers

Answer:

8835 divided by 31 equals

285 with a remainder of 0

4725 divided by 27 equals

175 with a remainder of 0

175 with a reminder of 0

word problem for 2 +(-8)=-6

Answers

Answer: Jessie goes to a gas station, she has $2 on her credit card. She sees a pack of gum, gatorade, and a snicker. Both the snicker and gatorade cost $4 each. The gum costs $2. She buys its, which leaves her with $-6 on her card.

Step-by-step explanation:


Make u the subject of the formula.
5u + 13 = 7t – 2ut

Answers

u = 6t-13/3

-2u of both sides
3u + 13 = 7t - t
which is actually
3u + 13 = 6t
-13
3u = 6t - 13
divided by 3
u = 6t-13/3

What is m∠1?............

Answers

the answer is 148

hope that helped lol


Determine if the sequence is arithmetic or geometric. Then, find the common difference or common ratio.
-30, -40, -50, -60, ..

Answers

Answer:

Arithmetic.

d = -10.

Step-by-step explanation:

There is a common difference of -10 so it is arithmetic.

If you spin the spinner 20 times, how many 5’s? please help

Answers

Answer:

4 times you divde 20 and 5 and its 4

Step-by-step explanation:

Answer:

Its 4 Fives

Step-by-step explanation:

If its wrong i'm sorry

My brain isn't working right now, please help.

Answers

Answer:

Down below, hope this helps!

Step-by-step explanation:

The author's message is that a person cannot predict the future without first learning about the past. The author does this by providing an example of how one wants to read without knowing the letters of the alphabet. Obviously, you can't read without first learning the letters of the alphabet. With the reading example, the author is explaining that just like a person trying to read without learning the alphabet first, a person predicting the future without knowing their history first is doing the exact same thing, it's nearly impossible.

PLEASE HELP ME
Given the function f (x) = 3x — 2, what is the value of f (3)?

A.
7

B.
-2

C.
12

D.
25

Answers

Answer:

A. 7

Step-by-step explanation:

f(x) = 3(3) - 2

f(x) = 9 - 2

f(x) = 7

good luck, i hope this helps :)

Answer:

B = -2

Step-by-step explanation:

26.6 is what percent of 53.2?

Answers

Answer:

Step-by-step explanation:

26.6/53.2 = 0.5 = 50%

26.6 is 50% of 53.2

simple question struggling abit :)

Answers

a. x=7 b. y=12 c. f=11/2

Calvin went to the candy store. Chocolate candy costs 50 cents each and gum cost 25 cents each. Calvin bought 2/3 as much gum as candy and spent $4. How many candies did he buy? How much gum?

Answers

Answer:

candy:6

gum:4

The answer is that because I did systems from a word problem

What is the quotient of 2.592\times 10^72.592×10 7 and 7.2 \times 10^47.2×10 4 expressed in scientific notation?

Answers

The quotient, expressed in scientific notation, is:

Quotient = 0.36 × 10³

Given:

(2.592 × 10⁷) / (7.2 × 10⁴)

To find the quotient of 2.592 × 10⁷ and 7.2 × 10⁴ and express it in scientific notation, we divide the coefficients and subtract the exponents.

Quotient = (2.592 × 10⁷) / (7.2 × 10⁴)

Dividing the coefficients, we get:

Quotient = 2.592 / 7.2 = 0.36

Subtracting the exponents, we get:

10⁷ - 10⁴ = 10⁽⁷⁻³⁾ = 10³

In scientific notation, the coefficient should be between 1 and 10, so we can rewrite the expression as:

Quotient = 0.36 × 10³

Learn more about the scientific notation here :

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find the slope of a line that passes through the points (-2,6) and (8,4)​

Answers

Answer:

tatagagffgfgsfgsdfhsfhsetywe6

Step-by-step explanation:

Answer:

-1/5

Step-by-step explanation:

Marilyn collects old dolls. She purchases a doll for $450. Research shows this doll's value will increase by 2.5% each year. Write an equation that determines the value, V, of the doll t after purchase.

Answers

Answer:

V = 450 + 0.025t

Step-by-step explanation:

What we know is that Marilyn purchases a doll for $450 dollars, and the value will increase by 2.5% each year. Now that we know this, this means we need an addition equation. We know 450 is being add to the 2.5% increase so the equation is V = 450 + 0.025t. (I put 2.5% as a decimal (0.025))

The equation that determines the value, V, of the doll (t) after purchase is [tex]V = 450 ({1.025}{} )^{t}[/tex]

What is equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

What is compound interest?

Compound interest is an interest accumulated on the principal and interest together over a given time period. The compound interest is calculated, after calculating the total amount over a period of time, based on the rate of interest, and the initial principal.

Formula of Compound Interest

 [tex]A = P (1+\frac{r}{100} )^{n}[/tex]

Where,

A = Final amount

P = Initial principal

r = Rate per annum

n = Time in years

According to the question

Marilyn purchases a doll for = $450

i.e, Initial Principal (P) = $450

Doll's value will increase each year by =  2.5%

i.e, Rate per annum = 2.5%

Value (V) of the doll after purchase = Final amount (A)

(t)  = Time in years (n)

Now, Formula of compound interest  

[tex]A = P (1+\frac{r}{100} )^{n}[/tex]

Substituting the values in formula

[tex]V = 450 (1+\frac{2.5}{100} )^{t}[/tex]

[tex]V = 450 (1+{0.025}{} )^{t}[/tex]

[tex]V = 450 ({1.025}{} )^{t}[/tex].

Hence, equation that determines the value, V, of the doll (t) after purchase is [tex]V = 450 ({1.025}{} )^{t}[/tex]

To know more about compound interest here:

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Please help! I don't wanna fail!

Answers

Answer:

32.55

Step-by-step explanation:

please help asap!!! i’ll give brainliest !!!!!!!

Answers

Answer:

points needed hope you under stand

Step-by-step explanation:

Stay safe though

I really need help with this, i dont understand

Answers

1/12. 1/6 x 1/2 = 1/12

If you know this could you help me?

Answers

Answer:

Equation : y = -0.5x − 8

Step-by-step explanation:

because i grabbed two points and plugged them in im not very good at explaining but im 99% sure thats right

john bought a new car for 20,000. if the car depreciates at a rate of 16% each year, what will be the value of the car after 3 years?

Answers

Answer:

13214

Step-by-step explanation:

Answer:11,854.08

Step-by-step explanation:

20000(1-0.16)^3

HELP I NEED HELP ASAP

Answers

the answer is c 2400

Lisa can run 4 more miles than Marlie. Marlie can run twice as many miles as Amy. Amy can run 3 miles. How many miles can Lisa run?

Answers

Lisa - 10 Miles
Marlie - 6 Miles
Amy - 3 Miles

When comparing the results of multiplying polynomials using the horizontal method and the vertical method, ____________. the vertical method will be correct only when the polynomials have no more than three terms.
the results will be the same.
the horizontal method will be correct when the polynomials have no more than three terms.
the results will never be the same.

Answers

Answer:

The result will always be the same

Step-by-step explanation:

The complete sentence is,

When comparing the results of multiplying polynomials using the horizontal method and the vertical method, ____________. the vertical method will be correct only when the polynomials have no more than three terms.

When comparing the results of multiplying polynomials using the horizontal method and the vertical method, the results will be the same. the vertical method will be correct only when the polynomials have no more than three terms.

What are polynomials?

A polynomial is a mathematical equation made up of coefficients and indeterminate that can only be solved using the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

A polynomial exists as an expression consisting of indeterminate and coefficients, that concern only the processes of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

Vertical addition exists as s procedure of adding where the numbers are lined up in columns according to their place values. Likewise, vertical subtraction exists as a method of subtracting where the numerals exist lined up in columns according to their place values.

To know more about polynomials refer to :

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The best answer gets brainiest please help!
Instructions: Convert the following problems into slope-intercept form aka y=mx+b

Question:
1. 5x−3y=−15
2. x+y=−7+2x
3. 3(x−4)−6=3y

Answers

Answer:

Step-by-step explanation:

1.y=5/3x+5

2.y=x-7

3.y=x-6

Answer

2

Step-by-step explanation:

x+y=-7+2x

Reorder the terms:

y = -7+ 2x

Solving

y = -7 + 2

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.Simplifying

y = 7 + 2x

I need helping factoring 5p^2-6p-8=0​

Answers

Answer:

p= -4/5 or p=2

Step-by-step explanation:

Factor left side of equation.

(5p+4)(p−2)=0

Set factors equal to 0.

5p+4=0 or p−2=0

Which equals :

p= -4/5 or p=2

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