Question 185307
In each case, start with one ray along the positive x-axis.
(a)30degree move counterclockwise 30 degrees and draw the other ray (quadrant 1)

(b)150degree move counterclockwise 150 degrees and draw the other ray (this is in quadrant 2)

(a)-270degree move clockwise 270 degrees (end up on the positive y axis)

detemine two coterminal angles (one positive and one negative)for the angle (a)0=45degree 
one angle is positive 45, the other is -(360-45) = -315degrees