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Question: 1. (1-sinx)2 /cos2x=1-sinx/1+sinx2. cosx/1+ ...

Question: 1. (1-sinx)2 /cos2x=1-sinx/1+sinx2. cosx/1+sinx + 1+sinx/cosx=2secx3. sin2x/(1-cosx)2=1+cosx/1-cosx. 1. (1-sinx)2 /cos 2x=1-sinx/1+sinx.

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