Math, asked by karanmajumdar, 10 months ago

prove that
cos^4A + sin ^2A = cos ^2A +sin^4a

Answers

Answered by Shrideepthi
1

Answer:

sin^4a-sin^2a

Step-by-step explanation:

cos^4a-cos^2a=sin^4a-sin^2a

cos^2a(cos^2a-1)

-cos^2a(1-cos^2a)

-(1-sin^2a)(sin^2a)

sin^4a-sin^2a

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