CBSE Class 11-science Answered
If cosA+cos^2A =1 ;prove that sin^2+sin^4=1
Asked by | 16 Jul, 2008, 02:23: PM
Expert Answer
If cosA+cos^2A =1 ------(i)
cos A = 1- cos^2 A
cos A = sin^2A
sin^2+sin^4 = sin^2A + (sin^2A )^2 = (cos A + (cos A)^2 = 1
Answered by | 16 Jul, 2008, 05:12: PM
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