Integral of $$$\frac{\cos{\left(x \right)}}{\cos{\left(3 x \right)}}$$$

The calculator will find the integral/antiderivative of $$$\frac{\cos{\left(x \right)}}{\cos{\left(3 x \right)}}$$$, with steps shown.

Find $$$\int \frac{\cos{\left(x \right)}}{\cos{\left(3 x \right)}}\, dx$$$.

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