\( \cot (\tan^{-1} \frac{a}{b}) + \tan (\cot^{-1} \frac{a}{b}) \) এর মান কত?

A \( \frac{b}{a} \)

B \( \frac{a}{b} \)

C \( \frac{2b}{a} \)

D \( \frac{2a}{b} \)

Solution

Correct Answer: Option C

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