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Mathematics 9 Online
OpenStudy (anonymous):

what is a radian?

OpenStudy (anonymous):

Radians are another unit for measuring angles. There are 2pi radians in every complete circle, so\[360^o=2 \pi\]

OpenStudy (anonymous):

Radian- A unit of angle, equal to an angle at the center of a circle whose arc is equal in length to the radius.

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