The radian, denoted by the symbol {\displaystyle {\text{rad}}}, is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The unit was formerly an SI supplementary unit and the radian is now an SI derived unit.
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Explanation:
The radian, denoted by the symbol {\displaystyle {\text{rad}}}, is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The unit was formerly an SI supplementary unit and the radian is now an SI derived unit.
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