Question

prove that Cos A / 1 + 10 a minus sin a divided by 1 + cos A is equals to Cos A minus sign

Answer 1

 · LHS = cos A / (1 - tan A) + sin A /(1 - cot A) = cos2 A / (cos A - sin A) + sin2 A / (sin A - cos A ) = cos2 A / (cos A - sin A) - sin2 A / (cos A ...