Prove that: 5. sin x + sin 3x + sin 5x + sin 7x = 4 cos x cos 2x sin 4x

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Prove that: 5. sin x + sin 3x + sin 5x + sin 7x = 4 cos x cos 2x sin 4x
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Prove that: 5. sin x + sin 3x + sin 5x + sin 7x = 4 cos x cos 2x sin 4x Prove that: 5. sin x + sin 3x + sin 5x + sin 7x = 4 cos x cos 2x sin 4x October 24, 2021 Category: Chapter 3 - Trigonometric Functions , Maths [...]
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