1. When the angle is set to 1 radian, what do you notice about the radius and arc length?
They are the same.
2. What is the relationship between arc length, the angle (in radians) and radius?
arc length = # radians * radius
3. In a circle there are [math]360^\circ[/math]. How many radians is this?[br](Hint: think about arc length and circumference! What is the formula for circumference?)