$\tan ^{-1}\left(\frac{\sin 2-1}{\cos 2}\right)$ ની કિંમત શોધો.

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

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