If you want a preview of what we will be studying, check out the other Khan Academy Trigonometry Units.
Practice Problems: p. 175 #1-9, 11-13
Khan Academy (Introduction to Radians)
Practice Problems: p. 186 #1-6, 12-13
Practice Problems: p. 201 #1-12, 20
Khan Academy (Unit Circle)
Practice Problems: p. 211 #1-10, 16, 18