જો $\sin \left(\cot ^{-1}(x+1)\right)=\cos \left(\tan ^{-1} x\right)$ હોય,તો ધન વર્ગમૂળને ધ્યાનમાં લેતા,$x$ ની કિંમત $\qquad$ છે.

  • A
    $0$
  • B
    $\frac{9}{4}$
  • C
    $\frac{1}{2}$
  • D
    $-\frac{1}{2}$

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