Back Radiaal Afrikaans راديان Arabic Radián AST Radian Azerbaijani Радыян Byelorussian Радыян BE-X-OLD Радиан Bulgarian রেডিয়ান Bengali/Bangla གཞུ་ཚད། Tibetan Radijan BS
A radian is a unit of measuring angles. It is shown by the symbol "rad"[1] or, less often, c (for circular measure). The radian was once an SI supplementary unit, but was changed to a derived unit in 1995. A radian's arc length is equal to the radii from the circle it is part of.
- ↑ "List of Geometry and Trigonometry Symbols". Math Vault. 2020-04-17. Retrieved 2020-08-31.