MCQ
$x \in R, \cot ^{-1} x=$
- A$\frac{\pi}{2}-\sin ^{-1} x$
- B$\frac{\pi}{2}-\cos ^{-1} x$
- ✓$\frac{\pi}{2}-\tan ^{-1} x$
- D$\frac{\pi}{2}-\sec ^{-1} x$
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