Recommended Questions
- sin x + sin 3x + sin 5x + sin 7 x = 4 cos x cos 2x sin 4x
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- Prove that sin x + sin 3x + sin 5x + sin 7x=4 sin 4x cos 2x cos x.
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- (" sin 8x cos x- sin 6x cos 3x")/(" cos 2x cos x - sin 4x sin 3x")...
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- (cos 2x sin x + cos 6x sin 3x)/(sin 2x sin x + sin 6x sin 3x) =cot 5x
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- (a) sin 2x + 2 sin 4x + sin 6x = 4 cos^(2) x sin 4x (b) cot 4x (sin...
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- sin x + sin 3x + sin 5x + sin 7 x = 4 cos x cos 2x sin 4x
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- Show that (sin 8x cos x - sin 6x cos 3x)/(cos 2x cos x - sin 3x sin 4x...
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