Which of the following is equal to secA - cosA?

A. tanA.sinA

B. cosA.sinA

C. cotA.cosA

D. sinA.cotA

Answer: Option A

Solution(By Examveda Team)

$$\eqalign{ & \sec A - \cos A \cr & = \frac{1}{{\cos A}} - \cos A \cr & = \frac{{1 - {{\cos }^2}A}}{{\cos A}} \cr & = \frac{{{{\sin }^2}A}}{{\cos A}} \cr & = \tan A.\sin A \cr} $$