यदि ${({\tan ^{ - 1}}x)^2} + {({\cot ^{ - 1}}x)^2} = \frac{{5{\pi ^2}}}{8}$ है,तो $x$ का मान ज्ञात कीजिए।

  • A
    $-1$
  • B
    $1$
  • C
    $0$
  • D
    इनमें से कोई नहीं

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समीकरण $\sin \left[ \cot^{-1} (1 + x) \right] = \cos \left[ \tan^{-1} x \right]$ को संतुष्ट करने वाला $x$ का मान है

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