Which of the following is equal to cos 63?

Q: Which of these is equal to cos 19? A) sin 71° B) sin 81° C. cos 71° D) Cos 81°

A: We have to find cos19

Q: Find the exact value of cos 195° + cos 105°

A:

Q: Find 10. cos°0 do

A: Given:  Let I=∫0π cos6 θ dθ To Find: To evaluate the given integral.

Q: 7. Which of the following is equal to cos 108°? A. sin 198° B. cos 198° C. sin 72° D. cos 72°

A:

Q: Find the exact value of cos 15°, by finding cos (A - B), when A = 45°, and %3D B3D30°. 0.6124 0.9659…

A: To Determine: Find the exact value of cos15

Q: find the exact value of each of the following. 2' (b) cos (20) (c) sin (d) cos-

A:

Q: what is the degrees of cos θ/2 = 1

A:

Q: find the exact value of cos(11Pi/6)

A: Consider the provided expression, cos11π6 Find the exact value of the expression. Use the identity,…

Q: Find the exact value of each expression.

A: We have to use trigonometric ratios to solve the expression . The cosine function is an even…

Q: in the figure below , what is cos0

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Q: Find the exact value of cos(37.5◦).

A:

Q: Give the exact value of each of the following:     cos 135 0

A:

Q: Find the exact value of the expression cos (120° - 45°)

A:

Q: Give the exact value of each of the following.   cos  pi/ 6

A: To find the exact value of the given trigonometric expression.

Q: Which of these is equal to sin 21°? A) Cos 21° B) Cos 69° C) sin 69° D) tan 69°

A:

Q: Which of these is equal to sin(70)? A) cos(110) B) cos(160") (C) cos(20°) D) cos(70")

A:

Q: Find the exact value of cot (cos^-1 (-4/7))

A: As we know that sinx=1-cos2x   and cotx=cosxsinx

Q: Find cos 2a, if cosa =12/13and 3pi/2 <a<2

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Q: Give the exact value of each of the following.   cos  pi/ 4

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Q: Verify the following identities: cos (40) = 8 cos“ 0 – 8 cos? 0 + 1

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Q: Use a sum or difference formula to find the exact value of the following. 19n 197 sin COS 30 sin COS…

A: Given that sin19π30cos7π15-cos19π30sin7π15we know that…

Q: Which of the following is not equivalent to cos (-)? a. sin 4 O b. sin (45°) C. cos (주) O d. cos

A: Which of the following is not equivalent to cos (-π/4) a. sin(5π/4) b. sin (45°) c. cos(π/4) d. cos…

Q: Find the exact value of cos- 12

A:

Q: Question in the file attached

A: By use Pythagorean Theorem to determine the side that would be adjacent to the angle.H2=P2+B2 .H…

Q: Find the exact value of each of the following.   cos 135 degree

A: Given,          cos135°

Q: Find the exact value of each expression. cos 255° - cos 195°

A: To find the exact value of expression  cos225o-cos195o

Q: Find the exact value of cos 112.5°.

A: cos112.5°

Q: Find cos (5) exactly. 12

A: To find it we will use formula Cos(x/2) = √[{1+cos(x)}/2].

Q: If cos 210°=-√3/2,find the value of tan105°

A: We know that : cos2θ=1-tan2θ1+tan2θ or, tan2θ=1-cos2θ1+cos2θ. Here given that θ=105° .

Q: Find the exact value of cos 105° by using a sum or difference formula.

A:

Q: If @= tan(1) and 180 <0<360", which of the following is equivalent to cos 6? O V2 O 1//2 O-1/V2 01…

A: The detailed solution is given below Thank you

Q: If cos θ = 3/4, what is cos2θ?

A:

Q: Find the exact value of each of the following.   cos 420 degree

A: Known fact: cos360°+θ=cosθ.

Q: Find the exact value of cos 15°.

A: To find value of cos15°. We know that cosa-b=cosa cosb+sina sinb Therefore, using the above formula.…

Q: Complete the sentence below. cos (20) = cos 20-, -1=1-

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Q: Find the exact value for the following. cos 75°

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Q: Find the exact value of each expression. (a) cos(120° + 45°) (b) cos 120° + cos 45°

A: Given that: (a)cos(120°+45°) (b)cos120°+cos45°

Q: Find the exact value of cos 75° by using a sum or difference formula.

A:

Q: Which of the following is not equivalent to cos (-)? 5 O a. sin O b. sin (45°) O c. cos O d. cos

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Q: What is cos(A)? 13 12 cos(A) = [ ? COS

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Q: Which of the following has the same graph as r = cos 2u? a. r = -sin (2u + pai/2) b. r = -cos (u/2)…

A:

Q: if csc a = √10 and a is in QII, find cos 2a

A: We have to find cos angle

Q: Suppose that -90 degrees &lt;θ&lt; 90 degrees. Cos θ/2  Is it positive or negative

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Q: Use a cofunction to write an expression equal to coS 11

A:

Q: Give the exact value of each of the following:       cos ( -4pi/3)

A: Give the exact value of  cos-4π3

Q: Find the exact value for the following. COS 12

A:

Q: Find the exact value of cos 120°. cos 120° =

A: Solution: The objective is to find the value of cos(120)

Q: Find the exact value of each of the following.   cos 225 degree

A: We have to find the exact value of cos225°

Q: Which of the following statements is true?   A- Tan 30 &gt; Sin 30 B-sin 60 &lt; Cos 60 C-Sin 45…

A: We use the values of the trigonometric functions. A) This is false.