1.

Cos A cosec A- sin A sec A/cos A+ sin A= cosec A- sec A​

Answer»

Sol: LHS = (COSEC A - SIN A) (SEC A - COS A) = (1/sin A - Sin A)(1/cos A - cos A) = [(1 - SIN2 A)/ sin A] [(1 - cos2 A)/cos A] = [(cos2 A)/sin ...



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