^ - 1 ( - 3 ) = - Vidyadip

MCQ

${\cot ^{ - 1}}( - \sqrt 3 ) =$

A
$ - \frac{\pi }{6}$
✓
$\frac{{5\pi }}{6}$
C
$\frac{\pi }{3}$
D
$\frac{{2\pi }}{3}$

✓

Answer

Correct option: B.

$\frac{{5\pi }}{6}$

b
(b) ${\cot ^{ - 1}}( - \sqrt 3 )\, = \pi - {\cot ^{ - 1}}(\sqrt 3 ) = \frac{{5\,\pi }}{6}$.

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