\frac{d}{d x}(\sec x)= (a) \sec ^{2} x (b) \tan ^{2} x (c) \sec x \tan x (d) 0
\frac{d}{d x}(\sec x)= (a) \sec ^{2} x (b) \tan ^{2} x (c) \sec x \tan x (d) 0

Sol:
Correct option is (C)\sec x \tan x