MCQ
$2\left[\sin ^{-1} \cos \left(\sin ^{-1} x\right)+\cos ^{-1} \sin \left(\cos ^{-1} x\right)\right]=$
  • A
    $\frac{\pi}{2}$
  • B
    $0$
  • C
    $2 \pi$
  • $\pi$

Answer

Correct option: D.
$\pi$
D

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