1. Sum and Difference Formulas
Accelerated Pre-Calculus

2. Sum and Difference Identities

3. Ex. Find the exact value of each expression.1.

4. 2.

5. Ex. Use the sum and difference formulas to find the exact values of the cosine.

6. Ex. Use the sum and difference formulas to find the exact values of the tangent.

7. Ex. Use the sum and difference formulas to find the exact value of the trig function.

8. Ex. Use the sum and difference formulas to find the exact value of the trig function.
6. cos (-210°)

9. You Try! Use the sum and difference formulas to find the exact value of the trig function.

10. EX. Find the exact value of the trigonometric function given:7.

11. You Try! Find the exact value of the trigonometric function given:7.
cos (u – v)?

12. Sum and Difference WS #1-17
Assignment
Sum and Difference WS #1-17