1. Using Fundamental Identities
PreCalculus 5-1

2. Trigonometric Identities

3. Trigonometric Identities

4. Trigonometric Identities

5. Trigonometric Identities

6. Trigonometric Identities
(1 + sin y) ( sec y – tan y )
cos y
Trigonometric Identities

7. Trigonometric Identities

8. Trigonometric Identities

9. Trigonometric Identities
check by graphing
Factor
Pythagorean Identity
Exponents
Trigonometric Identities

10. Trigonometric Identities
check by graphing
Trigonometric Identities

11. Trigonometric Identities
check by graphing
Factor – Perfect Square
Pythagorean Identity
Exponents
Trigonometric Identities

12. Trigonometric Identities

13. Trigonometric Identities
Use trigonometric substitution
Substitution
Factor out 9, and take square root
Pythagorean Identity
Square Root
Trigonometric Identities

14. Trigonometric Identities
Use logarithm properties to simplify
Logarithm property
Fundamental identity of Tangent
Simplification of fractions
Trigonometric Identities

15. Trigonometric Identities
Homework
pg 345 – 347
7, 9, 21-26, 33, 37, 43, 45, 49, 55, 59, 63, 67, 82, 89, 91
No need to verify with table feature
Trigonometric Identities