## EXPLORATION 2 Evaluating Trigonometric Functions of 60∘
(1) Find the values of all six trigonometric functions for an angle of 60∘. Note that most of the preliminary work has been done in Example 2.
(2) Compare the six function values for 60∘ with the six function values for 30∘. What do you notice?
(3) We will eventually learn a rule that relates trigonometric functions of any angle with trigonometric functions of the complementary angle. (Recall from geometry that 30∘ and 60∘ are complementary because they add up to 90∘.) Based on this exploration, can you predict what that rule will be? [Hint: The "co" in cosine, cotangent, and cosecant actually comes from "complement."]