Evaluate the following integrals : `int(1-cos2x)/(1+cos2x)dx`

Explanation

To evaluate the integral \(\int \frac{1 - \cos 2x}{1 + \cos 2x} \, dx\), follow these steps:

1. **Simplify the integrand**:
\[ \frac{1 - \cos 2x}{1 + \cos 2x} \]

2. **Use trigonometric identities**:
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