$\tan ^{-1} 2 x+\tan ^{-1} 3 x=\frac{\pi}{4}$ को हल करें।

  • A
    $x=\frac{2}{3}$
  • B
    $x=\frac{5}{6}$
  • C
    $x=-1$
  • D
    $x=\frac{1}{6}$

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$\tan ^{-1}\left(\tan \frac{5 \pi}{6}\right)+\cos ^{-1}\left(\cos \frac{13 \pi}{6}\right) = $

यदि $\tan \theta = - \frac{1}{\sqrt{3}}$,$\sin \theta = \frac{1}{2}$,और $\cos \theta = - \frac{\sqrt{3}}{2}$ है,तो $\theta$ का मुख्य मान क्या होगा?

यदि $x$ एक वास्तविक संख्या है,तो $\operatorname{Tan}^{-1}(\sqrt{x(x+1)})+\operatorname{Sin}^{-1}(\sqrt{x^2+x+1})=\frac{\pi}{2}$ के हलों की संख्या क्या है?

यदि $2 \tan^{-1}(\cos x) = \tan^{-1}(2 \csc x)$ है,तो $\sin x + \cos x = $

$\sin \left(\frac{\pi}{3}-\sin ^{-1}\left(-\frac{1}{2}\right)\right)$ का मान ज्ञात कीजिए।

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