Find the value of `tan15^(@)`.

Explanation

To find the value of \( \tan 15^\circ \), we can use the tangent subtraction formula. The formula states that:

\[ \tan(A - B) = \frac{\tan A - \tan B}{1 + \tan A \tan B} \]

### Step 1: Identify A and B
We can express \( 15^\circ \) as \( 60^\circ - 45^\circ \). So, we set:
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