Definition, Meaning & Synonyms
radian
noun
/ˈreɪ.di.ən/
Definition
A radian is a unit of angular measure used in mathematics and engineering.
Examples
- The angle of a circle’s radius can be expressed in radians.
- To convert degrees to radians, multiply the degree measure by π/180.
- A full circle is equal to 2π radians.
Meaning
It allows for the measurement of angles based on the radius of a circle. One radian is the angle formed when the length of the arc is equal to the radius of the circle.
Synonyms
- angle measure
- angular measure
