$\frac{{\sqrt {1 + \sin x} + \sqrt {1 - \sin x} }}{{\sqrt {1 + \sin x} - \sqrt {1 - \sin x} }} = $ (जब $x$,$II^{nd}$ चतुर्थांश में स्थित हो)

  • A
    $\sin \frac{x}{2}$
  • B
    $\cot \frac{x}{2}$
  • C
    $\tan \frac{x}{2}$
  • D
    $\sec \frac{x}{2}$

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