1. Trigonometric Functions

2. A Block Data

3. B Block Data

4. E Block Data

5. Each ratio (O/H, A/H, O/A) per individual groups (angles) is the same regardless of the size of the triangle. As the angle increases, the ratio of O/H increases. As the angle increases, the ratio of A/H decreases. As the angle increase, the ratio of O/A greatly increases. The ratio of O/H and A/H sometimes is similar. Trends:

6. Calculator Get it out of your bag

7. Calculator Zoom In Hit the ‘sin’ button Type in ’10’ Hit ‘enter’

8. Calculator sin (10) = 0.1736481777 Does this number appear on our spreadsheet anywhere?

9. Calculator Zoom In Hit the ‘sin’ button Type in ’20’ Hit ‘enter’

10. Calculator sin (20) = 0.3420201433 Does this number appear on our spreadsheet anywhere?

11. Calculator Zoom In Hit the ‘sin’ button Type in ’30’ Hit ‘enter’

12. Calculator sin (30) = 0.5 Does this number appear on our spreadsheet anywhere?

13. What does this mean? Ɵ H O A The ratio of the opposite side length divided by the hypotenuse side length is equal to the sin of the reference angle.

14. Calculator Zoom In Hit the ‘cos’ button Type in ’10’ Hit ‘enter’

15. Calculator cos (10) = 0.984807753 Does this number appear on our spreadsheet anywhere?

16. Calculator Zoom In Hit the ‘cos’ button Type in ’20’ Hit ‘enter’

17. Calculator cos (20) = 0.9396926208 Does this number appear on our spreadsheet anywhere?

18. Calculator Zoom In Hit the ‘cos’ button Type in ’30’ Hit ‘enter’

19. Calculator cos (30) = 0.8660254038 Does this number appear on our spreadsheet anywhere?

20. What does this mean? Ɵ H O A The ratio of the adjacent side length divided by the hypotenuse side length is equal to the cos of the reference angle.

21. Calculator Zoom In Hit the ‘tan’ button Type in ’10’ Hit ‘enter’

22. Calculator tan (10) = 0.1763269807 Does this number appear on our spreadsheet anywhere?

23. Calculator Zoom In Hit the ‘tan’ button Type in ’20’ Hit ‘enter’

24. Calculator tan (20) = 0.3639702343 Does this number appear on our spreadsheet anywhere?

25. Calculator Zoom In Hit the ‘tan’ button Type in ’30’ Hit ‘enter’

26. Calculator tan (30) = 0.5773502692 Does this number appear on our spreadsheet anywhere?

27. What does this mean? Ɵ H O A The ratio of the opposite side length divided by the adjacent side length is equal to the tan of the reference angle.

28. Trigonometric Functions Ɵ H O A SOH CAH TOA