1. 4.3 Right Triangle Trigonometry Trigonometric Identities

2. The part of a Right Triangle with respect to an angle Adjacent, Opposite and Hypotenuse.

3. Trig functions defined using the parts of the right triangle Sine, Cosine, Tangent, Cosecant, Secant and Cotangent

4. Sin 60º = Cos 30º If < 90º

5. Sin 42º= Cos(90º - 42º) = Cos 48º

6. Trigonometric Identities Some basic identities

7. Trigonometric Identities Very important identity And the identities that you can find

8. Angle of elevation or Angle of depression Angle of elevation: the angle it rise from horizontal Angle of depression: the angle it drops from horizontal

9. What is the Angle of elevation Find

11. Prove a Trigonometric Identity Work only on one side

12. Prove a Trigonometric Identity Work only on one side

13. Prove a Trigonometric Identity Work only on one side

14. Prove a Trigonometric Identity Work only on one side

15. Prove a Trigonometric Identity Work only on one side

16. Prove a Trigonometric Identity Work only on one side

17. Prove a Trigonometric Identity Work only on one side

18. Homework Page 287- 290 #3, 9, 15, 18, 21, 25, 31, 36, 40, 46, 48, 51, 55, 57, 61, 66, 71, 74, 82, 86

19. Homework Page 287- 290 #6, 12, 17, 20, 24, 28, 34, 37, 44, 47, 50 54, 56, 60, 65, 68, 72, 75, 84