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

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