Math, asked by komalshyam, 1 year ago

prove that cosA.cos(60-A)cos(60+A)=1/4cos3A

Answers

Answered by kkn2

3

by solving cos a-b cos a+b
=1/4(cos^3a-3sin^2acosa)
=1/4cos3A

Answered by Saswat143

2

Answer:

Here is your answer buddy...

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