Evaluate `cot (tan ^(-1) 3)`.

Explanation

To evaluate \( \cot(\tan^{-1} 3) \), we can follow these steps:

### Step 1: Let \( x = \tan^{-1}(3) \)
We start by letting \( x \) be equal to \( \tan^{-1}(3) \). This means that \( \tan(x) = 3 \).

**Hint:** Remember that \( \tan^{-1}(y) \) gives you an angle whose tangent is \( y \).

### Step 2: Use the definition of tangent
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