यदि $\frac{(x+1)^{2}}{x^{3}+x}=\frac{A}{x}+\frac{Bx+C}{x^{2}+1}$ है,तो $\sin^{-1} A + \tan^{-1} B + \sec^{-1} C$ का मान ज्ञात कीजिए।

  • A
    $\frac{\pi}{2}$
  • B
    $\frac{\pi}{6}$
  • C
    $0$
  • D
    $\frac{5\pi}{6}$

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