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Trigonometry

Trigonometry. What is the acronym we use to remember trig functions?. SOH CAH TOA. Sin θ. Sin θ = 5/13. Tan θ=6/8=3/4. Write the ratio you would use to find x. Cos θ = x / 11. What ratio would you create given the information?. Cos θ = 4 / 5. Find x. Tan 32 = x / 13 X = 8.1°.

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Trigonometry

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  1. Trigonometry

  2. What is the acronym we use to remember trig functions?

  3. SOH CAH TOA

  4. Sin θ

  5. Sin θ = 5/13

  6. Tan θ=6/8=3/4

  7. Write the ratio you would use to find x

  8. Cos θ = x / 11

  9. What ratio would you create given the information?

  10. Cos θ = 4 / 5

  11. Find x

  12. Tan 32 = x / 13 X = 8.1°

  13. Find x

  14. Cos 37 = 11 / x X = 13.7

  15. Find θ

  16. Cos -1 ( 4.4/11) θ = 66.4°

  17. Find θ

  18. Tan -1 ( 7.7 / 14) θ= = 28.8°

  19. Find all the missing parts of the triangle

  20. What is the law of sines?

  21. Sin A = Sin B = Sin C a b c

  22. Set up the ratio for AB in the following triangle

  23. Sin 53 = Sin 44 X 7

  24. Solve for angle b

  25. Sin b = Sin 115 16 123 B = 6.8°

  26. Find BC

  27. Sin 29 = Sin 93 16 X X = 33

  28. Draw the triangle. Solve for the missing pieces m∠C = 145° b = 7 c = 33

  29. m∠A = 28° m∠B = 7° a = 27

  30. What is the traditional law of cosines?

  31. Set up the formula to find BC

  32. x2 = 302 + 212 – 2(30)(21)cos123

  33. Solve for AB

  34. AB = 21

  35. Find the measure of angle A

  36. A = 137°

  37. Solve the triangle

  38. What are the two special right triangles?

  39. 30 – 60 – 90 45 – 45 – 90

  40. What is the relationship between the side lengths in a 45 – 45- 90 triangle?

  41. The legs are the same The hypotenuse is Leg√2

  42. What is the relationship between the side lengths of a 30 – 60 – 90 triangle?

  43. Long leg = SL√3 Hypotenuse = 2 * SL

  44. Solve for x and y

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