ANSWERS TO ODD NUMBERED EXERCISES*
1. 180°
3. −120°
5. 300°
7. −288°
9. a. 72°
b. 162°
11. a. 48°
b. 138°
13. a. 1°
b. 91°
15. 54°, 36°
17. 120°, 60°
19. γ = 30°
21. α = 120°, β = 30°, γ = 30°
23. α = 103.1°
25. c = 5
27. b = 8
37. 2 cm
39. 8 in.
47. −120°
49. 144°
51. 60 min or 1 hr
55. 241 ft
57. 10 ft
59. 17 ft
61. 48 ft × 28 ft
63. The corner does not measure 90°.
65. 10,200°
69. false
71. true
73. true
75. true
77. 110°
79. DC = 3
81. 25
83. The triangles are isosceles right triangles: 45°-45°-90°.
85. 28.89 ft, 33.36 ft
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