An angle with an initial ray pointing in the 3 o clock direction measures radians where 0 0 2 The circle s radius is 2 units long and the terminal point is located at 1 79 0 89 h 01 d Therefore Y 1 79 0 89 a The terminal point is how many radius lengths to the right of the circle s vertical diameter radius lengths Preview b When we evaluate cos h using a calculator or computer the value returned is radians Preview c Does an angle with the measure in part a terminate in the correct quadrant No M X Preview