trigonometry

Question: If $\tan \frac{A}{2}=\frac{3}{2},$then $\frac{1+\cos A}{1-\cos A}=$

1) $-5$

2) $5$

3) $9/4$

4) $4/9$

Solution:

Explanation: No Solution

Trigonometric ratios of multiple and sub-multiple angles

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