यदि $\pi < \alpha < \frac{3\pi}{2}$ है,तो $\sqrt{\frac{1 - \cos \alpha}{1 + \cos \alpha}} + \sqrt{\frac{1 + \cos \alpha}{1 - \cos \alpha}} = $

  • A
    $\frac{2}{\sin \alpha}$
  • B
    $-\frac{2}{\sin \alpha}$
  • C
    $\frac{1}{\sin \alpha}$
  • D
    $-\frac{1}{\sin \alpha}$

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