If cosA + cos^2A = 1,then prove that sin^2A+sin^4A=1.
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Answered by
14
Answer is:-
cosA=1-cos^2A
cosA=sin^2A. ---(i)
sin^2A+sin^4A
cosA+cos^2A(Substituting Eq (i) )
=1
Hence, Proved
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