In a Unit Circle what do the radian values mean?
A radian relates directly to the radius of the unit circle.
A unit circle, by definition, has a radius equal to 1 unit.
Also, 1 radian equals the length of the radius of the circle. So, for a unit circle , 1 radian = 1 unit.
If you measure the length around the entire unit circle (also known as the circumference ), it will equal
Relating this to circumference of a unit circle :
hope that helped