यदि $x < 1$ के लिए $f(x) = \frac{\sqrt{\operatorname{Cos}^{-1} x}}{\sqrt{2(1-x)}}$ है,तो $\lim_{x \rightarrow 1^{-}} f(x) =$

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

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