Find the principal value of: `tan^(-1)(-sqrt(3))`

Explanation

To find the principal value of \( \tan^{-1}(-\sqrt{3}) \), we can follow these steps:

### Step 1: Set up the equation
Let \( y = \tan^{-1}(-\sqrt{3}) \). This implies that:
\[ \tan y = -\sqrt{3} \]

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