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anonymous
 4 years ago
(1+cos4x)*sin(2x)=cos^2(2x)
anonymous
 4 years ago
(1+cos4x)*sin(2x)=cos^2(2x)

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You asked this some time back

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Last time it was (1cos4x)*sin(2x)=cos^2(2x)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.01+cos^2(4x)=2cos^2(2x)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0And how did you get it?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Its an identity can be proved using compund angle formula
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