$\cot ^{-1}\left(\frac{-1}{\sqrt{3}}\right)$ નું મુખ્ય મૂલ્ય શોધો.

  • A
    $\frac{2 \pi}{3}$
  • B
    $\frac{\pi}{3}$
  • C
    $\frac{-\pi}{3}$
  • D
    $\frac{\pi}{6}$

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$\sin ^{-1}\left(\frac{-1}{2}\right)+\sin ^{-1}\left(\frac{-\sqrt{3}}{2}\right)$ નું મૂલ્ય શોધો.

$2 \tanh^{-1} \frac{1}{2}$ ની કિંમત શોધો.

જો $x = \tan^{-1} \left(\frac{1}{5}\right) + \tan^{-1} \left(\frac{1}{8}\right)$ હોય,તો $\frac{\sin x + \cos x}{\tan x} = $

$\cos ^{-1}\left(\cot \left(\frac{\pi}{2}\right)\right)+\cos ^{-1}\left(\sin \left(\frac{2 \pi}{3}\right)\right)$ ની કિંમત શોધો.

$\sin \left[2 \cos ^{-1} \frac{\sqrt{5}}{3}\right]$ નું મૂલ્ય શોધો.

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