**Q:** What is a radian?

**A:** A radian is the angle measured between radii of a circle which are subtended by an arc which has the same length as the radii.

It may be easier to remember: a radian is just another measure of an angle, just like degrees.

**1 radian = 57.2958 **Â°

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**Q:** What does it mean when I see radians?

**A:** Remember that one full rotation around a circle is equal to 360Â°.

Conveniently, **360Â° is also equal to 2 radians**. If you can remember that, you should always be able to convert between radians and degrees. Keep in mind that 2 is simply a number (2 = 2Ã— = 6.2831…) so when we say 2 radians, we actually mean 6.2831 radians.

Here is a chart to help you remember:

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