$x$ ની કઈ કિંમત માટે $\sin(\cot^{-1} (1 + x)) = \cos(\tan^{-1} x)$ થાય?

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

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