Degree-radian conversion

It is worth memorising the notable values of the conversion between degrees and radians: they recur constantly in problems on the circle and in trigonometry.

In brief — Degree/radian conversion table

Degrees	$30°$	$45°$	$60°$	$90°$	$180°$	$360°$
Radians	$\dfrac{\pi}{6}$	$\dfrac{\pi}{4}$	$\dfrac{\pi}{3}$	$\dfrac{\pi}{2}$	$\pi$	$2\pi$

Links

Topics: Euclidean circle
Concepts: Radian
Skills: Using formulae