2. Simplifying More Trig Expressions
Section 5.1
Simplifying More Trig Expressions

3. Fundamental Trigonometric Identities:
Reciprocal Identities:
Quotient Identities:
Pythagorean Identities:
Cofunction Identities:

4. Even / Odd Identities:

5. Trig Identities
Any relationship that is true for all values of the variable for which each side is defined is called an identity. 
We can use trig identities to simplify trig expressions, prove other identities and solve more complex trig equations.

6. Strategies for Simplifying Trig Expressions:1. 2. 3. 4. 5.

7. We can factor trigonometric expressions, too!
Ex 1: Factor each trig expression
A. B. C.

8. Ex 2: Use trig identities to simplify

9. Ex 3: Use trig identities to simplify

10. Ex 4: Simplify by factoring:

11. Ex 5: Use trig identities to simplify

12. Ex 6: Simplify by adding the fractions first:

13. Ex 7: Simplify by factoring

14. Ex 8: Simplify by adding the fractions first:

15. Homework
Page 379
(2, multiples of 3,
45-53 odd, 61, 64, 65)