How many radian in 1 1/4 circle?
The answer is 1.57079632679.
We assume you are converting between radian and 1/4 circle.
You can view more details on each measurement unit:
radian or 1/4 circle
The SI derived unit for angle is the radian.
1 radian is equal to 0.636619772368 1/4 circle.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between radians and 1/4 circle.
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In mathematics and physics, the radian is a unit of angle measure. It is the SI derived unit of angle. It is defined as the angle subtended at the center of a circle by an arc of circumference equal in length to the radius of the circle. Angle measures in radians are often given without any explicit unit. When a unit is given, sometimes the abbreviation rad is used, sometimes the symbol c (for "circular").
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