\( \tan^{-1}\frac{1}{3} + \frac{1}{2}\tan^{-1}\frac{1}{7} \) এর মান কত?

A \( \frac{\pi}{4} \)

B \( \frac{\pi}{8} \)

C \( \tan^{-1}\frac{13}{16} \)

D \( \frac{1}{2}\tan^{-1}\frac{13}{16} \)

Solution

Correct Answer: Option B

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