Evaluate the radian measure of `"tan"^(-1)(8)/(9)`.

Explanation

To evaluate the radian measure of \( \tan^{-1}\left(\frac{8}{9}\right) \), we will follow these steps:

### Step 1: Calculate \( \tan^{-1}\left(\frac{8}{9}\right) \) in degrees.
Using a calculator or trigonometric tables, we find:
\[ \tan^{-1}\left(\frac{8}{9}\right) \approx 41.63^\circ \]

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