Math, asked by gautamaVasa560, 1 year ago

(cosec A - cot A)^2 = 1 - cos A/1 + cos A

Answers

Answered by Mathexpert
8
(CosecA - CotA)² =  ( \frac{1}{SinA}- \frac{CosA}{SinA})^2
                          = ( \frac{1-CosA}{SinA})^2
                         = \frac{(1-CosA)^2}{Sin^2A}
                         = \frac{(1-CosA)^2}{1-Cos^2A}
                         = \frac{(1-CosA)^2}{(1-CosA)(1+cosA)}
                         = \frac{(1-CosA)}{(1+cosA)}
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