Explain, in one or two sentences, why writing the expression in product form can make…

MATHEMATICS · Subjective · A Level · Mathematics · Trigonometry · Trigonometry

Problem

Explain, in one or two sentences, why writing the expression sin⁡x+sin⁡3x\sin x + \sin 3x in product form can make it easier to solve the equation sin⁡x+sin⁡3x=0\sin x + \sin 3x = 0.

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