MCQ
$\cos \left(\sec ^{-1} x+\operatorname{cosec}^{-1} x\right)=$
  • A
    1
  • B
    -1
  • $0$
  • D
    $\frac{1}{\sqrt{2}}$

Answer

Correct option: C.
$0$
C

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free