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Derivative of One Function w.r.t Another

47. Prove tha...

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47. Prove that (1+sinA--cosA)/(1+sinA+cosA) = tanA/2

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\frac{1 + sin A - cos A}{c o s A + sin A - 1} = tan \frac{A}{2}

\frac{cos A}{1 - tan A} + \frac{sinA}{1 - cot A} = cos A + sinA .

\frac{sin A + cos A}{sin A - cos A} + \frac{sin A - cos A}{sin A + cos A} = \frac{2}{2 {sin}^{2} A - 1}

\frac{cos A}{1 - tan A} + \frac{sin A}{1 - cot A} = sin A + cos A

\frac{c o s A}{1 - t a n A} + \frac{s i n A}{1 - c o t A} = s i n A + c o s A

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Derivative of One Function w.r.t Another

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