Question

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

Answer 1

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 ...

Answer 2

Step-by-step explanation:

Sol

LHS =(cosec A- sinA)/sec A- cas A)= (1/ sin A- sin A)(1/ cosA- cos A)= [(1- sin 2 A)/ sin A] [(1- cos 2 A)/ cos A] = [( cos-2 A/ sin]