Find the following trig functions using their reference angles.
13) sin 135°

Answers

Answer 1

Answer:

Well, I guess you could use a special representation of the function through a sum of terms, also known as Taylor Series.

It is, basically, what happens in your pocket calculator when you evaluate, for example,  

sin

(

30

°

)

.

Your calculator does this:

sin

(

θ

)

=

θ

θ

3

3

!

+

θ

5

5

!

...

where  

θ

must be in RADIANS.

In theory you should add infinite terms but, depending upon the accuracy required, you can normally stop at three terms.

In our case we have:  

θ

=

π

6

=

3.14

6

=

0.523

and:

sin

(

π

6

)

=

sin

(

0.523

)

=

0.523

0.024

+

3.26

10

4

...

=

0.499

0.5

Answer 2

Answer:

sin135° = [tex]\frac{1}{\sqrt{2} }[/tex]

Step-by-step explanation:

135° is in the second quadrant where sin x ° > 0

sin135°

= sin(180 - 135)°

= sin45°

= [tex]\frac{1}{\sqrt{2} }[/tex] = [tex]\frac{\sqrt{2} }{2}[/tex] ← exact value


Related Questions

heeeeeeeeeeeeeeeeeeeeeeeeeeelllllllllllllllllllpppppppppppppppppp

Answers

Answer:

x = 5

Step-by-step explanation:

[tex]6 - 2x = 5x - 9x + 16[/tex]

Simplify

That's

[tex]6 - 2x = - 4x + 16[/tex]

Add 4x to both sides of the equation

[tex]6 - 2x + 4x = 4x - 4x + 16 \\ 6 + 2x = 16[/tex]

Subtract 6 from both sides of the equation

[tex]6 - 6 + 2x = 16 - 6 \\ 2x = 10[/tex]

Divide both sides by 2

[tex] \frac{2x}{2} = \frac{10}{2} \\ [/tex]

We have the final answer as

x = 5

Hope this helps you

When adding numbers which way do you usually work

Answers

Step-by-step explanation:

start by adding together the numbers in the right hand column

The formula K= 5/9 (F - 32) + 273.15 converts temperatures from degrees Fahrenheit F to Kelvin K.

Solve the formula for F

Answers

Answer:

  [tex]F=\dfrac{9}{5}(K-273.15)+32[/tex]

Step-by-step explanation:

Undo the various operations done to F.

  [tex]K=\dfrac{5}{9}(F-32)+273.15\quad\text{given}\\\\K-273.15=\dfrac{5}{9}(F-32)\quad\text{subtract 273.15}\\\\\dfrac{9}{5}(K-273.15)=F-32\quad\text{multiply by 9/5}\\\\\boxed{F=\dfrac{9}{5}(K-273.15)+32}\quad\text{add 32}[/tex]

Can someone help me with this??? Plzzzz

Answers

Answer:

Im lazy to figure it out lol

Step-by-step explanation:

basically use order of operations. PEMDAS. start with ur parentheses and go on from there

Answer:

a

Step-by-step explanation:

(02.03 LC)
Read the following statement:
Line segment KL is congruent to line segment MN.
Which of the following is an equivalent statement? (1 point)
>
KL - MN
KL = MN
KL MN
KL E MN​

Answers

Answer:

KL = MN

Step-by-step explanation:

i got the question right on my test

Is 5.222... an irrational number?

Answers

Answer:

It is not

5.222... is rational

Step-by-step explanation:

An irrational number is a number that cannot be expressed as a fraction for any integers. It goes on forever, but it has no pattern. 5.222... has a pattern of only 2 as a decimal. Therefore, it is rational.

Hope this helps!

Plz name brainliest if possible!

2(1+2x) - 6 = 4x + 6

Answers

Answer:

x=1.5

Step-by-step explanation: 2 times 1 and 2 times 2 equals

4x-6=4x+6

6+6+12

8x=12

please help

Which of the following relations describes a function?
A.
{ (0, 0), (1, 1), (4, 2), (9, 3) }

B.
{ (0, 0), (1, 1), (1, -1), (4, 2) }

C.
{ (-4, 2), (-1, -1), (-1, 1), (0, 0) }

D.
{ (0, 0), (1, 1), (2, -2), (2, 2) }

Answers

Answer:

A

Step-by-step explanation:

In order for a relation to be a function, no x-values can be repeated. A is the only answer that does not repeat any x-values.

Problem How many unique ways are there to arrange the letters in the
word CHRISTMAS?*
362,880
45,255
1
55,698

Answers

Answer:

There are 181,440 ways.

Step-by-step explanation:

Given the word CHRISTMAS

In the word "Christmas" there are 9 letters.

Also take note, the letter "s" is repeated twice.

Hence, the number of ways is given by; no of ways = n!/m!

Where, n = 9, m = 2

no of ways = 9 *8*7*6*5*4*2*1/2*1

no of ways = 9*8*7*6*5*4*3

no of ways = 181,440.

Therefore, the number of unique ways that the letters in the word can be arranged is 181,440.

5 less than a number is equivalent to 1 more than three times the number

Answers

Answer:

x-5=3x+1 (x=-3)

Step-by-step explanation:

5 less (_-5)

than a number (x)

is equivalent to (=)

1 more than (+1)

than three times the number (3x)

combine them all to get x-5=3x+1

extra:

add 5 to each side x=3x+6

subtract x from each side 0=2x+6

subtract 6 from each side -6=2x

divide each side by 2 -3=x

Kiley had a piece of bamboo skewer that measured 14Three-fifths inches long. She wanted to cut it into toothpicks that were each 3One-fifth inches long. How many toothpicks can she make?
4 toothpicks
5 toothpicks
46 toothpicks
47 toothpicks

Answers

Answer:

(A) 4 toothpicks I took the test and (A) 4 toothpicks was correct

                        hope it helps :)

Answer:

4

Step-by-step explanation:

How many terms of the arithmetic sequey(1,3,5,7,...)will give sum of 961

Answers

When we add odd numbers:

1 = 1

1 + 3 = 4

1 + 3 + 5 = 9

...

Notice that the sum of n terms is n²

* This is because an odd number is expressed as  2n-1, we would need to get the sum of all 2n-1 substituting the value from 1 to n. (This is summation)

So we would have 2(1+2+3+...+n) - n = 2[n(n+1)/2] - n = n(n+1) - n = n(n+1-1) = n²

So:

Sum of n terms = 961

Sum of n terms = 31² = n²

n = 31

There are 31 terms in the arithmetic sequence

ALL CREDIT GOES TO mlcparra16

***NOT MY WORK

https://brainly.ph/question/182412

HELP ME ASAP PLSSSS I will make your brainly something that makes you the best

Answers

So u need help then go to the hospital

Solve for x: - 3.c + 14 = 4.2 - 7

Answers

-3x + 14 = 4x - 7

Answer:

x = 3

Step-by-step explanation:

-3x + 14 = 4x - 7

+7                  +7

-3x + 21 = 4x

+3x         +3x

21 = 7x

21 / 7     7x / 7

3 = x

Check:

-3x + 14 = 4x - 7

-3 x 3 + 14 = 4 x 3 - 7

-9 + 14 = 12 - 7

5 = 5

x = 3

Use the area model to find each product.
1) 6v(2v + 3)

Answers

Multiple 6v with the (2v) and (3)
12v+ 18
Since (12v) is a variable and (18) is not they cannot be added together, so the answer is: 12v+18

Find the probability that when a couple has six ​children, at least one of them is a girl. ​​

Answers

Answer: the probability is 63/64 that at least one of the six children is a girl

Answer:5/6

Step-by-step explanation:

Select the choice that translates the following verbal phrase correctly to algebra: (2 points)

the product of k and m

Question 1 options:

1)

km

2)

k + m

3)

k − m

4)

k ÷ m

Answers

This is just stuff you have to memorize, I can’t really explain much further than product always means multiplication. The “product of” means k*m

If you can factor trinomials pleasee help you don't need to do all of them

Answers

HOPE THIS CAN HELP YOU WITH YOUR ANSWER

=729
2. Be Precise Suri solved the equation x2 = 49
and found that x=7. What error did Suri
make? © MP.6
What is the answer

Answers

Answer:

see below

Step-by-step explanation:

x^2 = 49

Take the square root of each side

sqrt(x^2) =± sqrt(49)

x = ±7

Suri failed to take into account the negative value of the square root

a spherical balloon is being inflated so that the radius is increasing at a rate of 3 cm/sec. find the rate at which the volume is increasing when r=10cm.

Answers

Answer:  1200pi cubic cm per sec

========================================

Work Shown:

dr/dt = 3 is the rate of change of the radius

V = (4/3)pi*r^3 ..... volume of a sphere

dV/dt = (4/3)*3*pi*r^2*dr/dt ... chain rule

dV/dt = 4*pi*r^2*dr/dt

dV/dt = 4*pi*r^2*3

dV/dt = 12*pi*r^2

dV/dt = 12*pi*10^2 ... plug in r = 10

dV/dt = 1200pi

The value of the guitar has been found to be -80y + 800, where y is the number of years since it was released. a. By how much is the value of the guitar decreasing per year? b. How much was the initial value of the comic?

Answers

B will be 81bdbdbdjdjjdjdhx

Answer:

B

Step-by-step explanation:

Suppose that we are doing batch testing with batches of size 12. Suppose that the probability that a batch of size 12 tests negative is .655. Determine the expected number (expected value) of tests needed for a group of size 12.

Answers

Answer:

[tex]E(x) = 7.86[/tex]

Step-by-step explanation:

Given

Represent the size with n and the probability with p

[tex]n = 12[/tex]

[tex]p = 0.655[/tex]

Required

Determine the expected value; E(x)

[tex]E(x) = np[/tex]

[tex]E(x) = 12 * 0.655[/tex]

[tex]E(x) = 7.86[/tex]

Hence, the expected value is 7.86

The expected value is 7.86.

Important information:

Group size = 12Probability that a batch of size 12 tests negative is 0.655.

We need to find the expected number (expected value) of tests needed for a group of size 12.

Expected value:

The expected value is:

[tex]E(x)=np(x)[/tex]

Where, n is the batch size and p is the probability.

[tex]E(x)=12(0.655)[/tex]

[tex]E(x)=7.86[/tex]

Therefore, the expected value is 7.86.

Find out more about 'Expected value' here:

https://brainly.com/question/13029887

Sarah bought 3 pounds of apples for $6 . How much did each pound of apples cost ?
A - $2 per pound of apples
B- .20 per pound of apples
C- $20 per pound of apples
can someone please help me ??

Answers

Answer:

A

Step-by-step explanation:

6/3 = 2

Simplify: -2 1/3-(-10 1/6)

Answers

Answer:

exact form: 47/6 decimal form: 7.8333 mixed number form: 7 5/6

Step-by-step explanation:

-convert mixed numbers into improper fractions:

-7/3-(-61/6)

-least common multiplier for 3 and 6 is 3

-adjust fractions based on LCM

=-14/6+61/6

-since the denominators are equal, combine the fractions:

=-14+61/6

-add/subtract the numbers (-14+61=47)

evaluate the expression for the given value of the variable: 2(x²2) for x=3​

Answers

The answer would be 36 because you just plug 3 in for x

first to get right gets brainliest
9+10=?

Answers

Answer:

=19!

Step-by-step explanation:

A bird is attempting to fly northeast at a constant speed, but a wind blowing southward at 5 miles per

hour blows the bird off course. If the bird’s overall movement (incorporating its intended movement

and the movement due to wind) is at a speed of √53 miles per hour, how fast would it have been traveling if there was no wind?

Answers

Answer:

The value is [tex]v_b = 9.89 \ miles /hour[/tex]

Step-by-step explanation:

From the question we are told that

The velocity of the wind southward is [tex]v = 5 j \ miles / hour[/tex]

The resultant velocity of the bird with the with wind is [tex]V= \sqrt{53}[/tex]

Generally for an object moving in the northwest direction the angle with the horizontal is 45°

Generally the velocity of the bird in the along the x -axis is

[tex]V_x= v_b cos 45^o i[/tex]

Generally the velocity of the bird in the along the y -axis is

[tex] V_y=(v_b sin 45^o - 5)j[/tex]

Here [tex]v_b[/tex] is the velocity of the bird without the wind

Generally the resultant velocity of the bird with the with wind is mathematically represented as

[tex]V = \sqrt{V_x^2 + V_y^2 }[/tex]

=> [tex] \sqrt{53} = \sqrt{(v_b cos 45^o)^2 + (v_b sin 45^o - 5)^2 }[/tex]

Generally

[tex]sin 45^o = \frac{1}{\sqrt{2} }[/tex]

and

[tex]cos 45^o = \frac{1}{\sqrt{2} }[/tex]

So

[tex] \sqrt{53} = \sqrt{(v_b* (\frac{1}{\sqrt{2} ))^2 + ([v_b * (\frac{1}{\sqrt{2} ) ]- 5)^2 }[/tex]

=> [tex]53 = \frac{1}{2} v_b^2 + \frac{1}{2} v_b^2 + 5^2 -2*5 * \frac{1}{\sqrt{2} } v_b[/tex]

=> [tex] 53 = v_b^2 + 25 - 5 \sqrt{2} v_b[/tex]

=> [tex] v_b^2 - 5 \sqrt{2} v_b -28 = 0[/tex]

Solving the above quadratic equation using quadratic formula we obtain that

[tex]v_b = 9.89 \ miles /hour[/tex]

The other value is negative so we do not make use of it because we know that the bird is moving in the positive x and y axis

20 points need help now

Answers

Answer:

n=5, n^2 = 36 now

Step-by-step explanation:

Need help! Due at 12:00 pm

Answers

The answer is A mark me brainless

Answer:

The answer to the graph that fits the most with the functions would most likely be A.

If You Could Commit One Crime, What Would It Be?

Answers

Answer:

Grand Theft

Step-by-step explanation:

steal money from a bank ig .
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