Math, asked by BROLY100, 1 year ago

cos A cos 2A cos 4A cos 8A = sin16A / 16 SIN A

Answers

Answered by sandeshn

24

multiply and divide by 2sinA in LHS
=2sinA cosA cos2A cos4A cos8A/2sinA
=sin2A cos2A cos4A cos8A/2sinA
similarly ,
=sin16A/16sinA

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