a. Prove that cos 4 2 sin 4 2 cos 4. b. Hence find, for 0
a. Prove that cos4 2θ − sin4 2θ ≡ cos 4θ.
b. Hence find, for 0 ≤ θ ≤ 180°, all the solutions of cos4 2θ − sin4 2θ = 1/2.
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Step by Step Answer:
Chapter # 7
Section: Mixed exercise
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Question Posted: August 12, 2023 05:25:44