1. LC8: TRIGONOMETRY 8C, 8D

2. MS. JELLISON, WHAT ARE WE DOING TODAY? 8C Label the sides of a right triangle as opposite, adjacent, and hypotenuse. 8D Apply sine, cosine, and tangent to find a missing side in a right triangle.

3. Pythagorean Theorem Formula: When do I use this? Criteria: Must be a ____________ triangle Must be given _______ ___________ Must be trying to find the __________ _________ Trigonometry Formula: When do I use this? Criteria: Must be a ____________ triangle If trying to find a ________, must be given a ___________ and an ___________ If trying to find an ___________, must be given ________ ___________

4. LABELING THE RIGHT TRIANGLE

7. WHAT IS TRIGONOMETRY? Trigonometry is based on the fact that right triangles with the same angles are ________________ ~ similar = Because of this, right triangles with the same angles have consistent _________ of their _________

8. DISCOVERING THE TRIGONOMETRIC TRIANGLE

9. LET’S PRACTICE Sin C = Sin A =

10. LET’S PRACTICE Cos C = Cos A =

11. LET’S PRACTICE Tan C = Tan A =

12. CAUTION!!! Before we can really start solving trigonometric equations, we must make sure that our calculators are set to ____________. This is not the default setting of your calculator, so you must ALWAYS check to see that your calculator is in this setting before you start doing trigonometry.

13. STEPS TO CHANGE YOUR CALCULATOR TO DEGREES: 1. Press “MODE” (right next to the blue “2 nd ” button) 2. Go down to the third line, highlight DEGREE, and hit “ENTER” 3. Your calculator is now in DEGREE MODE. 4. To exit this menu screen, press “2 nd ” then “MODE” (Quit).

14. HOW TO LABEL A TRIGONOMETRY PROBLEM 1. Label the ______. 2. Color the ______ that you are working with. 3. Label the ______ side (relative to your __!) 4. Label the ______ side (relative to your __!) 5. Answer the following questions: - What two sides are you working with (H, O, A)? - So what trig ratio should you use? 6. Set up your ratio. 7. Solve for the missing side.

15. PRACTICE PROBLEM (1)

16. PRACTICE PROBLEM (2)

17. PRACTICE PROBLEM (3)

18. PRACTICE PROBLEM (4)

19. PRACTICE PROBLEM (5)

20. VIDEOS.. Gettin Triggy Wit it https://www.youtube.com/watch?v=t2uPYYLH4Zo SOH CAH TOA (rap) https://www.youtube.com/watch?v=NeIm_aSFd3I

21. WHAT NOW? Turn in both before leaving (1) Exit Slip on HOA (2) Create your own Trigonometric Problem. Draw the right triangle with specified measurements. Make questions regarding the problem. Create an answer key.