Math, asked by punya59, 1 year ago

cos 2 theta is equals to Cos raise prove that to 4 theta minus sin raised to 4 theta

Answers

Answered by mahfoozfarhan4

0

in4θ+cos4θ=(sin4θ+2sin2θcos2θ+cos4θ)−2sin2θcos2θ

=(sin2θ+cos2θ)2−2sin2θcos2θ

=1−2sin2θcos2θ

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