Question

Define 1 radian answer this question​

Answer 1

Answer:

an SI unit of plane angle; the angle between two radii of a circle that cut off on the circumference an arc equal in length to the radius. 1 radian is equivalent to 57.296 degrees and π/2 radians equals a right angleSymbol: rad.

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Answer 2

Answer:

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.