यदि $(\cos ^{-1} x)^2-(\sin ^{-1} x)^2 > 0$ है,तो

  • A
    $x < \frac{1}{2}$
  • B
    $-1 < x < \sqrt{2}$
  • C
    $0 \leqslant x < \frac{1}{\sqrt{2}}$
  • D
    $-1 \leqslant x < \frac{1}{\sqrt{2}}$

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