What should be the first step in verifying the following identity? (Hint - look at the numerator) sin 42 – 4 sin cos a cos 2a Rewrite cos 2x as 1 – 2 sin? z Rewrite sin 4x as 2 sin(2x) cos(2r) Rewrite cos 2x as cos² x – sin? x sin 2x Reduce the 4x and 2x to become Cos E

Q: Find the expression , identical go Cat (9x) the given a. sin 46x) - sinx Cos x - sin(16x) b. cos…

A: Expression of cot(9x) : See all the options And use the trigonometric formula .

Q: 1) If Cos A= 4/5 Then Find the value of Sin 2A O 24/25 O ((24)/25 7/25 O (-7)/25

A: In the question we have to find the value of sin2A.

Q: The Equivalent expression of cos 3A sin A cos A is Select one: csc A – 2 sin A + 2 sin? A CSc A csc…

A: Simplification of trigonometric ratio

Q: 1 tan(i.)) t =-+ 2h, v2 Vị cos(i.) V2 2h, cos(i.) t = -+ V2 V1 1 1 t =-+ 2h, V2 Hint: cos? (i.) +…

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Q: if x is in III, and cos x= - 8/17. Determine the exact value of sin 2x and cos 2x

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Q: Verify the identity. (Simplify at each step.) COS ( 57 - x) = -√² (cos(x) + sin(x)) 4 2 cos( 57 - x)…

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Q: Prove that the following equation is an identity. 2 2 (3+ sinx) + cos x = 10 + 6 sinx

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Q: cos2e sin20 + csc 0 sin e

A:

Q: To begin evaluating | sin*xcos°xdx conveniently, express: cos x as (cos?x) 2cosx and use the Half -…

A: Solution:∫sin4xcos5xdx∫sin4xcos4xcosxdx∫sin4xcos2x2cosxdx∫sin4x1-sin2x2cosxdxlet, sinx=tcosxdx=dt

Q: Select the expression that completes the identity tan(z) + cot(z) 01 - cos (z) O cos (z) – sin (z) O…

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Q: Evaluate sin (; - i In v2) cos(; - i In i ln v2) i In /2) cos o (3/4)i o (3/8)i o 5/8 o 5/4

A:

Q: Which of the following are identities? 1. sin (½ + x) = sin -sin x II. sin (x - 2) = sinx - sin 그플…

A: The given expressions are,I. II. III. IV. The aim is to find the true identities.

Q: Which one of the following is not equal to cos 4x for all real values of x?«- A sin? 2x – cos? 2x+ В…

A: Evaluating each of the options given

Q: Convert this identity to one using sine term(s) only. 1 - 2 cos2r = 2sin²r - 1 -1 - sin²r 1 -…

A: This question is based on conversion of Cos2r = 1 - Sin2r

Q: Find cos 2a if 4 sin a - COS a = 3. 2 sin a + COS a

A: −53​Explanation:Click shift solve then equals.

Q: Rewrite cos 2 sin cos 2 sin 122) 1 W -1 W ¹-0 2 as an algebraic expression in w. X S 00

A:

Q: Verify the identity: sin(α + β) sin(α - β) = cos2 β - cos2 α

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