यदि $\cos \alpha = \frac{2 \cos \beta - 1}{2 - \cos \beta}$ है,तो $\tan \frac{\alpha}{2} \cot \frac{\beta}{2}$ का मान ज्ञात कीजिए,जहाँ $(0 < \alpha < \pi$ और $0 < \beta < \pi)$.

  • A
    $\sqrt{3}$
  • B
    $\sqrt{2}$
  • C
    $3$
  • D
    $2$

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