This is the unit for radians. It is defined as the angle suspended by a segment of a circle along a circumference (\( \htmlId{tooltip-circumference}{c} \)) that is one radius (\( \htmlId{tooltip-radius}{r} \)) long. (Will change soon, temporary description)

Radians are defined as the angle suspended by a segment of a circle along a circumference (\( \htmlId{tooltip-circumference}{c} \)) that is one radius (\( \htmlId{tooltip-radius}{r} \)) long. (Will change soon, temporary definition)