How can I get the angle on radian on wolfram?

Question

Here, the argument of a complex number in degrees is given. How can I ask wolfram to convert it into radians (they give an approximation).

Answer 1

$x$ degrees is $x \cdot \frac{\pi}{180}$ radians. This follows because the angle in a semi-circle is $180^{\circ}$ and $\pi$ radians. So the relation $180^{\circ} \mapsto \pi$ radians gives $x^{\circ} \mapsto \frac{\pi x}{180}$ radians.

Edit to answer edited question: this will make Wolfram convert the argument to radians.