Find the value of `2 cos^(-1).(3)/(sqrt13) + cot^(-1).(16)/(63) + (1)/(2) cos^(-1).(7)/(25)`

Explanation

To solve the problem, we need to evaluate the expression:

\[ 2 \cos^{-1}\left(\frac{3}{\sqrt{13}}\right) + \cot^{-1}\left(\frac{16}{63}\right) + \frac{1}{2} \cos^{-1}\left(\frac{7}{25}\right) \]

### Step 1: Evaluate \( 2 \cos^{-1}\left(\frac{3}{\sqrt{13}}\right) \)

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