2) If Sin A= 3/5 Then Find the value of Cos 2A O 24/25 O ((24)/25 7/25 O (-7)/25

Q: 7) Simplify sin (cos-1 (2x)) to an expression involving no trig or inverse trig functions. (Assume…

A: Approach to solving the question:The following key concepts can be used to simplify given…

Q: 10. Find the exact value of cos 2x given that cos x =

A:

Q: 7) Use sun and difference formula to verify the identity cos(A+B) cos(A-B) = cos2A + cos2B-1 A-B) =…

A:

Q: Establish the identity cos ²(80) – sin2(80) = cos (160).

A: Given : cos28θ - sin28θ = cos16θ

Q: QUESTION 2 Je" cos(5x)dx = 7x O A. (7 cos 5x + 5 sin 5x) + C 24 O B. (7 cos 5x – 5 sin 5x) + C 74 e7…

A: Please see the explanation below

Q: Show (without using a calculator) that sin π/7 cos 4π/21 + cos π/7 sin 4π/21 =√3/2 .

A:

Q: 7. Give the exact answer for cos ( sin- 13

A: Consider the given expression

Q: 4. Solve 2 cos²x - cos x = 1, x = [0, 2π] for the exact values of x in radians or two decimal places…

A:

Q: 1 sin4 0 = 3/7-1/10 20 + — + co cos 82 8 cos 40

A: We need to prove the given identity.

Q: 18) fin

A:

Q: Find the exact value of cos COS 3 π 2 0 3 π 2

A: The cosine function is negative in third document.

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.