Let's examine the trigonometric relationship between two angles, 0 and 2π-0 (measured in radians) , by completing the following.
The angle 0 0.30π and its reference triangle are shown on the unit circle below.
(a) Now we're going to subtract from 2π. Sketch the angle that measures 2π-0.30π = 1.70 in standard position. The reference triangle for the new angle will be shown