If $3 \tan^{-1} x + \cot^{-1} x = \pi$, then $x$ is equal to: - DASH

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Question

If $3 \tan^{-1} x + \cot^{-1} x = \pi$, then $x$ is equal to:

$0$

$1$

$-1$

$\frac{1}{2}$

Solution

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