1. Sum and Difference Formulas (Section 5-4)

2. Sum and Difference Formulas

3. Sum and Difference Formulas

4. Find the exact value of each expression.
Example 1

5. Find the exact value of each expression.
Example 2

6. Find the exact values of the sine, cosine and tangent of the angle.
Example 3

7. Find the exact values of the sine, cosine and tangent of the angle.
Example 3

8. Find the exact values of the sine, cosine and tangent of the angle.
Example 3

9. Find the exact values of the sine, cosine and tangent of the angle
Example 4

10. Find the exact values of the sine, cosine and tangent of the angle
Example 4

11. Find the exact values of the sine, cosine and tangent of the angle
Example 4

12. Write the expression as the sine, cosine or tangent of an angle.
Example 5

13. Write the expression as the sine, cosine or tangent of an angle.
Example 6

14. Write the expression as the sine, cosine or tangent of an angle.
Example 7

15. HW #_______ pg 384 (1-29odd)

16. Verify the identity algebraically.
Example 8

17. Find the exact value of the trigonometric function given that
in quadrant I and in quadrant II
Example 9

18. Find the exact value of the trigonometric function given that
in quadrant I and in quadrant II
Example 10

19. Find the exact value of the trigonometric function given that
in quadrant I and in quadrant II
Example 11

20. Write the trigonometric expression as an algebraic expression.
Example 12

21. Write the trigonometric expression as an algebraic expression.
Example 13

22. Find the value of the expression without the calculator.
Example 14

23. Find the value of the expression without the calculator.
Example 15

24. Use right triangles to evaluate the expression.
Example 16

25. Verify the identity.
Example 17

26. Verify the identity.
Example 18

27. Find the solution(s) to the equation in the interval [0, 2π)
Example 19

28. Find the solution(s) to the equation in the interval [0, 2π)
Example 20

29. HW #_______ pg 384-385 (31-57 odd) …31, 33 just verify the identity