1. 6.5 Double-Angle and Half-Angle Formulas

2. Theorem Double-Angle Formulas

4. Theorem Half-Angle Formulas where the + or - sign is determined by the quadrant of the angle

5. Examples Page 501: 11, 19, 29, 31, 51, 57, and 61

6. Assignment Page 501: 10, 12, 16, 18, 22, 30, 52, 58, and 60

7. 6.6 Product-to-Sum and Sum-to-Product Formulas

8. Theorem Product-to-Sum Formulas

9. (a)

10. (b)

11. Theorem Sum-to-Product Formulas

12. (a) (b)

13. 6.7 Trigonometric Equations (I)

15. Solve the equation

16. Assignment Page 505: 2, 4, 12, 16, 20 Page 511: 6, 12 – 34 even

17. 6.8 Trigonometric Equations (II)

18. Solving Trigonometric Equations Quadratic in Form

20. Solving Trigonometric Equations Using Identities

23. Solving Trigonometric Equations Linear in Sine and Cosine

27. Assignment Page 518: 2 – 34 even and 46