2. ( Identify the quadrant where each angle lies. Then rewrite the expression as an equivalent expression in terms of a reference angle and use the 60°-30° or 45°-45° right triangle to evaluate the expression. Hint: See pages 5 and 6 of the Section 4.4 course notes for how to solve this type of problem. (a) sin (33) 5π 7πT (b) cos (c) tan