Math, asked by spandanchatterjee29, 8 days ago

prove that cos8a+cos4a+1/cos4a +cos2a +1=1+sin2a/2

Answers

Answered by mdn412977

0

Step-by-step explanation:

Prove that sin^4A + cos^4A = 1 - 2 sin^2A·cos^2A

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