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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 5 · Set 1 · Q7
The principal value of cot^-1(-1/(√ 3)) is:
The principal value of $\displaystyle \cot ^{-1}\left(-\frac{1}{\sqrt{3}}\right)$ is :
Official answer
(D)
$\displaystyle \frac{2 \pi}{3}$
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