a) Prove the identity cos 4 sin 4 2 cos 1 b) Solve the equation cos 4 sin 4 0 for 0 360 ...

a We can use the identity cos sin 1 to write cos4 sin4 cos sincos sin cos cos sin ...

a) Prove the identity cos 4 sin 4 = 2 cos 1. b)

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a) Prove the identity cos⁴ θ − sin⁴θ = 2 cos²θ − 1.

b) Solve the equation cos⁴θ − sin⁴θ = 0 for 0° ≤ θ ≤ 360°.

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Complete Pure Mathematics 1 For Cambridge International AS & A Level

ISBN: 9780198427438

2nd Edition

Authors: Jean Linsky, Brian Western, James Nicholson

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Question Posted: Apr 14, 2023 11:28 AM

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a) Prove the identity cos 4 sin 4 = 2 cos 1. b)

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a We can use the identity cos sin 1 to write cos4 sin4 cos sincos sin cos cos sin ...View the full answer

Complete Pure Mathematics 1 For Cambridge International AS & A Level

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