જો $\cos^{-1} \sqrt{p} + \cos^{-1} \sqrt{1-p} + \cos^{-1} \sqrt{1-q} = \frac{3\pi}{4}$ હોય,તો $q$ ની કિંમત શોધો.

  • A
    $1$
  • B
    $\frac{1}{\sqrt{2}}$
  • C
    $\frac{1}{3}$
  • D
    $\frac{1}{2}$

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