यदि $\cos^{-1} x = y$ है, तो $\dots \dots \dots$

  • A
    $-\frac{\pi}{2} \leq y \leq \frac{\pi}{2}$
  • B
    $0 \leq y \leq \pi$
  • C
    $0 < y < \pi$
  • D
    $-\frac{\pi}{2} < y < \frac{\pi}{2}$

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