Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
MediumIf $\pi < \alpha < \frac{3\pi}{2}$,then $\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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