# What is a Radian?

A radian is a unit measurement of an angle.

$$2\pi = 360°$$ $$\pi = 180°$$

$$1radian=(\frac { 180 }{ \pi } )\approx 57.3°$$

A radian is a unit measurement of an angle.

$$2\pi = 360°$$ $$\pi = 180°$$

$$1radian=(\frac { 180 }{ \pi } )\approx 57.3°$$