\( \sin \left( 2\tan^{-1} \frac{1}{2} \right) = ? \)

A \( \frac{\sqrt{5}}{4} \)

B \( \frac{5}{4} \)

C \( \frac{4}{5} \)

D \( \frac{\sqrt{3}}{4} \)

Solution

Correct Answer: Option C

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