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Deepak Bora
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Prove that : ( cos A–sin A+1)/( cos A +sin A–1) = cosec A + cot A, (using the identity cosec^2A = 1+cot2A).

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Prove the following identities, where the angles involved are acute angles for which the expressions are defined.

NCERT Maths Solutions class 10th Trigonomtry, chapter 8.

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