જો $\alpha \leq 2 \sin^{-1} x + \cos^{-1} x \leq \beta$ હોય,તો

  • A
    $\alpha = -\frac{\pi}{2}, \beta = \frac{\pi}{2}$
  • B
    $\alpha = -\frac{\pi}{2}, \beta = \frac{3\pi}{2}$
  • C
    $\alpha = 0, \beta = \pi$
  • D
    $\alpha = 0, \beta = 2\pi$

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