Evaluate: `int(sinx)/(sin3x)dxdot`

Explanation

To evaluate the integral \( \int \frac{\sin x}{\sin 3x} \, dx \), we can follow these steps:

### Step 1: Rewrite \( \sin 3x \)
We start by using the trigonometric identity for \( \sin 3x \):
\[ \sin 3x = 3 \sin x - 4 \sin^3 x \]
Thus, we can rewrite the integral as:
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