मान ज्ञात कीजिए: $\sin^{-1}(12/13) + \cos^{-1}(4/5) + \tan^{-1}(63/16) = $

  • A
    $\pi/2$
  • B
    $3\pi/2$
  • C
    $\pi$
  • D
    $2\pi$

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