sin square theta +cos square theta is equal to 1
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L.H.S. = sin*2theta +cos*2theta
= (1-cos2theta)/2 + (1+cos2theta)/2
=1/2 + 1/2
=1 R.H.S. proved.
= (1-cos2theta)/2 + (1+cos2theta)/2
=1/2 + 1/2
=1 R.H.S. proved.
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