Math, asked by aadirao66, 1 year ago

cos 3 X + Cos 5x + cos 7x + cos 15 x prove that is equal to 4 cos 4x cos 5x cos 6x

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Answered by tg655060

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Answer:

4x

Step-by-step explanation:

cos 3 X + Cos 5x + cos 7x + cos 15 x prove that is equal to 4 cos 4x cos 5x cos 6x

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