Sum, Difference, Double and Half Angle Formulas

We are proving (and practicing) with several important identities this week, all of them involving modifying the angles.  You must be able to generate a proof of them on your own, as well as using them to answer/simplify problems.

1/28  5.3  Sum and Difference Formulas
                  HW p.444/1-29 odd, 31-34, tan(A + B), tan(A - B)

1/29  5.3  More proofs of cos(A + B) and cos(A - B)
                  HW p.444-445/33-43 odd, 44,47,49,52,55,60,63-65,67

1/31  5.4  Double Angle Formulas
                  HW p.452/5-35 odd

2/01  5.4  Half Angle Formulas
                  HW p.451-452/39-47 odd, 51-53

2/04  Review

2/05  Test of 5.1 - 5.4