Prove that cos u\\1+sin u =1-sin u\\cos u

1.	Prove that cos u\\1+sin u =1-sin u\\cos u
Answer» Hope it will help u??? By cross multiplication.....-------> cosU × cosU = (1-sinU)(1+sinU)....-------> cos^2U = 1-sin^2U....-----> cos^2U = cos^2U.......proved

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