यदि $\tan ^{-1}\left(\frac{1}{2 \sqrt{2}}\right)+\sin ^{-1}\left(\frac{1}{\sqrt{3}}\right)=\cos ^{-1} x$, तो $x=$

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

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