Ever wondered how to convert Radians from Degrees and vice versa?

First off, what exactly is a radian?
Well, a radian is a unit of an angle which is equal to the central angle of a circle whose arc is is equal to the length of the radius.

This is exactly what I mean,

However, there is way to convert radians to degrees it is simple! In a full circle there are 2 Pi radians, therefore in half a circle (180 degrees) there are Pi radians. So in the radian measurement Pi radians is 180 degrees.

So that leaves us to this formula on converting Degrees to Radians:

And to convert Radians into degrees this shall be the formula: 

And Viola! Thats all you have to do, plug in whatever the angular measure and you are done!

Now try this:

Convert 15 Degrees: 

Convert 5Pi/6 Radians: