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17. Prove - SecA (1- SinA ) (SecA +tanA) = 1. |
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Answer» Seca(1-sina)(1/cosa+Sina/cosa) => seca(1-sina)(1-sina)/cosa => seca(1-sin²a)/cosa => seca cos ²a/cosa => 1/cos a×cosa =1 Like my answer if you find it useful! |
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