Evaluate : `cos(2cos^(-1)x+sin^(-1)x)a tx=1/5`

Explanation

To evaluate the expression \( \cos(2 \cos^{-1} x + \sin^{-1} x) \) at \( x = \frac{1}{5} \), we can follow these steps:

### Step 1: Use the identity for inverse trigonometric functions
We know that:
\[ \sin^{-1} x + \cos^{-1} x = \frac{\pi}{2} \]
Thus, we can rewrite the expression:
...