$\cos ^{-1}\left(\frac{-1}{2}\right)-2 \sin ^{-1}\left(\frac{1}{2}\right)+3 \cos ^{-1}\left(\frac{-1}{\sqrt{2}}\right)-4 \tan ^{-1}(-1)$ ની કિંમત શોધો.

  • A
    $\frac{19 \pi}{12}$
  • B
    $\frac{35 \pi}{12}$
  • C
    $\frac{47 \pi}{12}$
  • D
    $\frac{43 \pi}{12}$

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