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Chapter 7 Review

Chapter 7 Review. Question 1 - 10. Find Cos(42 o ) (round to the nearest four places). Answer 1 – 10. .7431. Question 1 - 20. Find angle A Cos(A)=1/2. Answer 1 – 20. 60 degrees. Question 1 - 30. Find angle A Tan(A)=1. Answer 1 – 30. 45 degrees. Question 1 - 40. Solve for X. X.

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Chapter 7 Review

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  1. Chapter 7 Review

  2. Question 1 - 10 Find Cos(42o) (round to the nearest four places)

  3. Answer 1 – 10 • .7431

  4. Question 1 - 20 Find angle A Cos(A)=1/2

  5. Answer 1 – 20 60 degrees

  6. Question 1 - 30 Find angle A Tan(A)=1

  7. Answer 1 – 30 45 degrees

  8. Question 1 - 40 Solve for X X 15 8

  9. Answer 1 – 40 58 degrees

  10. Question 1 - 50 Solve for X X 89 55

  11. Answer 1 – 50 38 degrees

  12. Question 2 - 10 • Tell whether the number represent and acute obtuse, right or no triangle 2, 20, 22

  13. Answer 2 – 10 No triangle 2+20=22

  14. Question 2 - 20 • Tell whether the number represent and acute obtuse, right or no triangle 4, 11, 13

  15. Answer 2 – 20 Obtuse

  16. Question 2 - 30 • Solve for X • (round to 2 decimal places) 510 X 8

  17. Answer 2 – 30 Cos(51)=8/x 8/Cos(51)= x X=12.71

  18. Question 2 - 40 700 8 X

  19. Answer 2 – 40 • X = 21.98

  20. Question 2 - 50 Solve for x and Y 630 8 X Y0

  21. Answer 2 – 50 • X=7.13 • Y= 27 degrees

  22. Question 3 - 10 • Solve for X 450 X 8

  23. Answer 3 – 10 X = 8√2

  24. Question 3 - 20 • Solve for X 300 X 5

  25. Answer 3 – 20 X = 10

  26. Question 3 - 30 • Solve for X and Y 300 Y 6 X

  27. Answer 3 – 30 X = 2√3 Y = 4√3

  28. Question 3 - 40 • Name the rules in a 45-45-90 when going from a leg to HYP and HYP to leg

  29. Answer 3 – 40 • Leg HYP = Leg * √2 • HYP Leg = HYP / √2

  30. Question 3 - 50 • Name the Rules in a 30-60-90 when going from the Short Leg to the Long Leg and the HYP and also Back

  31. Answer 3 – 50 SL HYP = SL * 2 HYP SL = HYP / 2 SL LL = SL * √3 LL SL = LL / √3

  32. Question 4 - 10 • Find the Tangent ratio of the angle 15 7 8

  33. Answer 4 – 10 • Tan = 8/7

  34. Question 4 - 20 • Find the Cosine and Sine ratios of the angle 15 7 8

  35. Answer 4 – 20 Cos = 7/15 Sin = 8/15

  36. Question 4 - 30 • Define all Trig Ratios

  37. Answer 4 – 30 • Sine = Opposite/Hyp • Cosine=Adjacent/Hyp • Tangent=Opposite/Hyp

  38. Question 4 - 40 • Solve • Lauren want to measure the height of a building. She stands 150ft from the base of the building. She measure the angle of elevation from a point on the ground to the top of the building to be 500. Estimate the height of the building.

  39. Answer 4 – 40 Height = 178.76ft

  40. Question 4 - 50 • Find all three trig ratios of angle A A 18 10 7

  41. Answer 4 – 50 • Sin(A)= 7/18 • Cos(A)= 10/18 = 5/9 • Tan(A)= 7/10

  42. Question 5 - 10 • The perimeter of a square is 24in. Find the length of the diagonal.

  43. Answer 5 – 10 • 6√2in

  44. Question 5 - 20 • Solve for the missing angle (round to the nearst degree) A 12 5

  45. Answer 5 – 20 • Angle A = 22.6 degrees

  46. Question 5 - 30 • Solve the triangle X 13 Z Y Y 10

  47. Answer 5 – 30 • Z= 13 • X= 67.38 degrees • Y=45.24 degrees

  48. Question 5 - 40 • Solve for all parts of the triangle A 15 5 B X

  49. Answer 5 – 40 • A= 70.53 degrees • B= 19.47 degrees • X=10√2

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