यदि $\frac{3x+1}{(x-1)(x+3)}=\frac{A}{x-1}+\frac{B}{x+3}$ है,तो $\sin^{-1} \frac{A}{B}$ का मान ज्ञात कीजिए।

  • A
    $\frac{\pi}{2}$
  • B
    $\frac{\pi}{3}$
  • C
    $\frac{\pi}{6}$
  • D
    $\frac{\pi}{4}$

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$\tan^{-1} \left[ \frac{\sqrt{2}}{\sqrt{3}} \cos \left( 5 \sin^{-1} \frac{1}{\sqrt{2}} \right) \right] = \dots$

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$\tan ^{-1}\left(\tan \frac{31 \pi}{6}\right)=$ . . . . . . .

मान लीजिए कि फलन $g: (-\infty, \infty) \rightarrow \left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$,$g(u) = 2 \tan^{-1}(e^u) - \frac{\pi}{2}$ द्वारा दिया गया है। तब,$g$ है

मान ज्ञात कीजिए: $\cos^{-1} \left( \cos \frac{7\pi}{6} \right)$

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