trigonometry

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

1) $\frac{9}{2}$

2) $\frac{11}{2}$

3) $\frac{7}{2}$

4) $-\frac{1}{2}$

Solution:

Explanation: No Solution

Trigonometric ratios of multiple and sub-multiple angles

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