1. Unit 4: Trigonometry Minds On

2. Unit 4: Trigonometry Minds On

3. Unit 4: Trigonometry Learning Goal: I can prove simple trigonometric equations using trig identities. Lesson 5 – Trigonometric Identities

4. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities

5. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities

6. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities Identity - an equation that is always true, regardless of the value of the variable. Trig Identities - equations that are always true, regardless of the value of θ.

7. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities Bad News…. There are 8 trigonometric identities that you need to know Good News…. You already know 6!

8. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities

9. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities A common math problem is a proof. This is where you will be asked to prove that a given equation is true. You do this by performing a left side - right side check.

10. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities

11. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities

12. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities Prove (tan θ) (sin θ) + cos θ = sec θ

13. Unit 4: Trigonometry Lesson 5 – Trigonometric Identities Homework  Pg. 310 #1, 3, 5, 6, 8, 12  Quiz Tomorrow