Verify the identity. 1 (1 - cos(B))(1 + cos(ß) csc?(B) Expand the product, and then use a Pythagorean Identity. (1 - cos(B))(1 + cos(ß)) = 1 - Use a Reciprocal ldentity.

Q: Question in Image.

A: To Determine: Find the exact value :

Q: 8. Find the exact value of cos 75°.

A: Given cos75°We need to find th exact value of cos75°

Q: (1) Prove sin(A+B) = sin(A) cos(B)+sin(B) cos(A) by using the formula for cos(A+B)and a cofunction…

A: Given:

Q: How do you solve this?

A: Given that cos x = 1/3 and x is in the interval (0, π/2) and sin y=1/4 and y is in the interval (…

Q: How did the solution of this problem remove the fraction to turn it into just CSCx on its own as…

A: We have to use the reciprocal identity That means

Q: Evaluate cos 0 within AABC. B 5 A cos 0 = Enter your next step here 3.

A: Given,  Side AB=5 Side AC=3 Side BC=4 Where angle at c is a right angle So ABC is a right angle…

Q: Verify the identity. (csc^2 θ − 1)sin^2 θ ≡ cos^2 θ

A: Given the identity (csc2 θ -1)sin2 θ=cos2 θ. We need to verify the identity.

Q: 4 cos 3

A:

Q: Verify the given sum-to-product formula cos * + cos * = 2cos [(* + *)/2] cos * - */2}. Start with…

A:

Q: A = %3D (b) If cos (2a) – sin (2æ) = cos( %3D B =

A:

Q: 0 cos n0 do

A:

Q: A 1. If 0° < 0 < 90° and cos 0 = , find cos . %3D '42

A: Given cosθ=570&lt;θ&lt;90

Q: (4) = - V2 -1 cos 4

A: Given,            cos-122=-π4

Q: Use the product-to-sum identity 2 cos A cos B = cos (A + B) + cos (A – B) to prove the sum-to- P +…

A:

Q: 4.) Prove the identity. csc e Csc 20 2 cos e

A:

Q: Evaluate cos 0 within AABC. B 25 24 7 C COs O Enter your next step here

A: A triangle is a polygon with three sides. A right triangle is a triangle with one of the angles…

Q: Establish the identity. 2 cos a- sin "a= a-1 2 2 cos? Using the identity sin a+ cos a= 1, make the…

A:

Q: b. Find a similar formula for 4(cos" r cos na næ).

A: In this question we have to differentiation.

Q: sin (1) Using an appropriate substitution, evaluate: [2+ cos(1) ]* 1 +C A 3[2+ cos(1)]³ 3 B +C [2+…

A: topic - Indefinite integration

Q: Find 0, if 0° <0 < 360° and 1 and 0 in III. 2 cos 0 =

A:

Q: Evaluate cos 0 within AABC. 13 12 cos 8 Enter your next step here

A:

Q: 4. Simplify the identity: cos 2 x - 1 Cos x + 1 COS

A:

Q: Σ 11 cos n=1

A: We will use the concept of nth term test.

Q: Find the values of x in 4 cos2 x = 1

A:

Q: W 2. Use an identity to find the value of cos (6- 270°). O - cos 0 O sin 0 O cos 0 O - sin 0

A: Value is evaluated using identity

Q: Verify the identity : cos 4t = 8 cos4 t - 8 cos2 t + 1

A:

Q: sin (x) = -0.9. If x and y are complementary, what is cos (y)? %3D Sub

A:

Q: 45. Give an example of values a, b such that (a) cos(a + b) + cos a + cos b (b) cos cos a 2.

A: (a)

Q: Verify the identity. (1 - cos(B))(1 + cos(ß)) csc²(B) Expand the product, and then use a Pythagorean…

A: We have to solve the problem as per instructions.

Q: 1/6 | 210,/ 1- cos (20) de. Evaluate

A:

Q: Homework: de 1-cos 0 1. S-

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 2. What is the exact value of cos (-112.5°) using the half-angle identities? O V2+v2 2. O v2-v2 2.…

A:

Q: Question in image.

A: We have to find the exact value of the given expression making use of sum or difference formula…

Q: 1+ cos A 1- cos A Prove = 4 cot A csc A 1- cos A 1+ cos A

A:

Q: 10. L{ cos (8t + 2) } (entry # 71)

A: To find  L{cos (8t+2)} we shall use  the following formula  1.  cos (A+B)=cos (A) cos(B)-sin (A)…

Q: Prove the identity 28in CA+ )•cos (A+ ) = 2 cos A-1 %3D

A: We have to verify the identity: 2sinA+π4·cosA+π4=2cos2A-1 Here we are going to use these identities:…

Q: verify that el0 + e-i0 COS %3D

A:

Q: +1- 2 cos 0 for Z E C., show z"+ = 2 cos(n@) that %3D

A:

Q: 1. Verify the following identities. (H sece+1 a. = 1+ cose sece 1 b. 1+cot28 = (1+ cos0)(1 – cose)…

A: Trigonometric identities help to verify the given identities. The secant function is the reciprocal…

Q: 5. Use an appropriate sum or difference identity to find the exact value of cos105° . (b) (E - J6)…

A:

Q: 4. Determine the exact value of cos 6.

A:

Q: Qshow that: Cos 40 8 Cos"e +8 Cos e+1

A:

Q: exp (exp(-in)) 0.3679 -0.3679 coS TO T - 1 sin Tt - exp(cos n i sin T) -

A: We know that exp(iθ) = cosθ+i sinθ Hence consider exp(exp(-iπ) = exp(cos(-π)+i sin(-π))= expcos(π)-i…

Q: (3) Verify the identity: 1+cos + 1-cose 2csc²x

A:

Q: What is the exact value for cos(cos-1(1))

A:

Q: 19. What is the exact value of cos (-112.5°) using the half-angle identities? V2-V2 - 2. V2+v2 2. O…

A: