5n 25) cos 12 + sin sin 12 12 cos 12

Q: Use a sum or difference formula to find the exact value of the following. 2л Cos 15 2л sin 15 CoS 5…

A: Given,         cosπ5cos2π15-sinπ5sin2π15We know that,         cosA+B=cosAcosB-sinAsinB

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: 5 and 90°<0<180°. 13 Suppose that sin0- Find the exact values of cos and tan 2 2

A: Given trigonometric identitysinθ=513,90°&lt;θ&lt;180°

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: Given sin 9 = - , where < 9< 2n: 2 10 a. Compute the exact value of tan 9. Answer: b. Compute the…

A: A detailed solution is given below.

Q: If 0°<θ<90° and sin⁡θ=12/13, find cos⁡θ using trigonometric identities. 12/13 5/13 12/5 5/12

A:

Q: If sin 0 = 24,0<0< 25 (a) sin (20) π find the exact value of each of the following. 2 Ꮎ 2 (b) cos

A:

Q: Apply the appropriate formula to evaluate the following. a. 2 sin 15° cos 15° * cos 21 - sin sin 9…

A: a. 2 sin15° cos15°=sin215°       ∵sin2x=2 sinx cosx=sin30°=12

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

A: Given that: cos-π4

Q: -1 Determine sin=(cos a) Provide your answer be

A: cosa can be written as sin(pi/2-a) sin and sin inverse get canceled see attached image

Q: 2. Given sin ß =- in QII, find the exact value of the following: %3D 13 a. sin(2B) b. cos (28) C.…

A: sinβ=513

Q: Use a sum or difference formula to find the exact value of the following. 3n sin cos 15 + cos sin 5…

A: To determine the value of the following.

Q: Suppose sin(0) -3/5 and sin(¢) = -/17, with both angles are in the interval T, 3 /2]. What must be…

A:

Q: 15 Given: sin0 and %3D 17 2 Find the exact value of: cos 2 cos

A:

Q: Hence or otherwise find the exact value of 2 sin 285 cos 45

A: Given  To find exact value of 2sin285 cos 45   Using formula

Q: Use a sum or difference formula to find the exact value of the following. 22n 22n cos cos + sin sin…

A: From the given problem:    cos22π21cos5π7+sin22π21sin5π7   From the trigonometric identity:…

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

A:

Q: Find the exact value of the expression. Not a decimal.   cos^-1 (sin 7Pi/6)

A:

Q: 5. Is the equation cos 0 – sin 0 =1 an identity? If so, verify it. If not, explain why. %3D

A: The trigonometric equation is an identity if it is true for all cases. To check if the equation is…

Q: 15. Find the exact value of each expression. a) sin 8° cos 22° + cos 8º sin 22° b) sin 75°

A: The angles and the sides of a triangle are related by using trigonometric ratios. These ratios are…

Q: Use a sum or difference formula to find the exact value of the following. 6T TC Cos 42 TC cos + sin-…

A: Solve equation

Q: If sin A = 3/5 with A in QI and cos B = - 5/13 with B in QIII, find sin (A + B), cos (A + B), and…

A: Given: sinA=35, cosB=-513 here, A is in first quadrant and B is in third quadrant  we know that in…

Q: Use half angle or power reduction formulas to fill in the blanks in the identity below: 1 14 1 28…

A:

Q: Use a sum or difference formula to find the exact value of the following. TC Cos cos sin - 5 15 15

A:

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: Given cos 0 0 < 0 < Find the EXACT values of the following sin 20 cos 20 tan 20

A:

Q: (9) Use the half-angle identity to find cos 3π and < x < 2 JOTE: Enter the exact, fully simplified…

A: Given problem:- tan(x) =4/3  Find cos(x/2) and π&lt;x&lt;3π/2

Q: 2. Given sin B = %3D in QII, find the exact value of the following: 13 1. sin(2B) b. cos (26) C. tan…

A:

Q: Find the exact value of cos(a – B) given that sin a = and cos 3 = - for a in Quadrant II and B…

A:

Q: 3) sin 0 = and < e <n. Evaluate sin 20 , cos 20 , and tan 20 2

A: sin theta=6/7

Q: K. Use an addition formula to find the exact value of cos 15° cos 75° + sin 15° sin 75°

A: Addition formula: cos(A-B)=cosA cosB+sinA sinB

Q: Use the identity cos'0 + sin 0 = 1 to prove that cosec*0 = 1 + cot 0

A: Since you have asked multiple question, we will solve the first question for you as per our guide…

Q: Let sin 0 = 12/13, and cos 0 = 5/13, and find the indicated value. %3! %! sec 0 = %3D

A: Given ,  sin θ = 12/13  cos θ = 5/13 We have to find sec θ Since ,

Q: Verify the identity. 4 cos?(x) – 2 = 2 – 4 sin2(x)

A:

Q: 11(cos123° + i sin 123°)*3(cos 43° + i sin 43°) *Perform the indicated operation and leave the…

A:

Q: Use the given information to find the exact value of a. sin 20, b. cos 20, and c. tan 20. 15 O lies…

A: We find here trigonometry value.

Q: Use the equivalent forms of the first Pythagorean identity. e and 0 terminates in QI. Find sin 0 if…

A: Given:

Q: 1. Using the figure below, find sin(20) and cos(20). 3 8

A:

Q: 5. Is the equation cos 0 – sin 0 = 1 an identity? If so, verify it. If not, explain why.

A: We have to check

Q: 8. 15 Use the figure above to find the exact value of sin 20, cos 20, tan 20. sin 20= cos 20= tan…

A:

Q: 4. If sin A with A in QIV, find COS Select the correct answer. a. COS b. COS C. COS d. COS e. COS of…

A:

Q: If sin 8 is given and 8 E QII, find cos 6. 5 sin 8 = 26 cos e 8 =

A: sinθ=-526 By using the identity sin2θ+cos2θ=1, we get…

Q: Suppose sin(@) = -³/5 and sin(ø) = –³/17. with both angles are in the interval n, 3*/2]. What must…

A: sinθ=-35sinϕ=-817

Q: 1-cos(7A) 2. Which is the simplified form of the expression + • cot (4) tan O no correct answer O…

A: Formula: Cos(2A)=1-2Sin2A

Q: Use the equivalent forms of the first Pythagorean identity. = and 0 terminates in QII. 2 Find cos 0…

A:

Q: 9. Given sin 0 =i and cos 0 < 0, evaluate the following. a. cos 0 b. cot 0 c. cos(20)

A: Consider the following value: sinθ=16 Consider the following trigonometric identity:…

Q: Use a sum or difference formula to find the exact value of the following 2n sin + cos sin cos - 3 12…

A:

Q: how is this solved ?

A: see 2nd step.

Q: Use a sum or difference formula to find the exact value of the following. 17n sin cos 36 5T 17t sin…

A: You know, According to the sum formula:

Q: find the exact value of the given expression cos(7pi/12)cos(pi/6)-sin(7pi/12)sin(pi/6)

A: