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Trigonometry, 3rd Edition by Cynthia Y. Young

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ANSWERS TO ODD NUMBERED EXERCISES*

CHAPTER 1

Section 1.1

1.  180°

3.  −120°

5.  300°

7.  −288°

9.  a. 72°

b. 162°

11.  a. 48°

b. 138°

13.  a.

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

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37.  2 cm

39.  8 in.

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47.  −120°

49.  144°

51.  60 min or 1 hr

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55.  241 ft

57.  10 ft

59.  17 ft

61.  48 ft × 28 ft

63.  The corner does not measure 90°.

65.  10,200°

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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

Section ...

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