$\tan ^{-1} x+2 \cot ^{-1} x=\frac{2 \pi}{3}$ નો ઉકેલ શોધો.

  • A
    $-\frac{1}{\sqrt{3}}$
  • B
    $\frac{1}{\sqrt{3}}$
  • C
    $-\sqrt{3}$
  • D
    $\sqrt{3}$

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જો $\tan^{-1} \left[ \frac{\sqrt{5} - 2\sqrt{6}}{1 + \sqrt{6}} \right] = \frac{\pi}{3} - \tan^{-1}(k)$ હોય, તો $\sec^{-1}(k) = \dots$

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જો $a < \frac{1}{32}$ હોય,તો $(\sin^{-1} x)^3 + (\cos^{-1} x)^3 = a\pi^3$ ના ઉકેલોની સંખ્યા કેટલી થાય?

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ધારો કે $\tan ^{-1}\left(\tan \frac{5 \pi}{4}\right) = \alpha$ અને $\tan ^{-1}\left(-\tan \frac{2 \pi}{3}\right) = \beta$. તો:

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