Chapter 4: Trigonometric Functions

1.	Find the exact value of the expression. [Hint]
2.	Find the exact value of the expression. [Hint]
3.	Use a calculator to find the value of the expression. [Hint]
4.	Find the exact value of the expression. [Hint]
5.	Use a sketch to find the exact value of the expression. [Hint]
Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.