Exercises 8.2, page 248

1.

$\begin{array}{l} \sin 200 ° = - \sin 20 ° = - 0.3420, \\ \tan 150 ° = - \tan 30 ° = - 0.5774, \\ \cos 265 ° = - \cos 85 ° = - 0.0872, \\ \cot 300 ° = - \cot 60 ° = - 0.5774, \sec 344 ° = \sec 16 ° = 1.040, \\ \sin 397 ° = \sin 37 ° = 0.6018 \end{array}$
3. $\sin 25 °; - \cos 40 °$
5. $- \tan 75 °; - \csc 32 °$
7. $\sec 65 °; - \sin 20 °$
9. $- \sin 15 ° = - 0.26$
11. $- \cos 73.7 ° = - 0.281$
13. $\sec 31.67 ° = 1.175$
15. $\tan 70.9 ° = 2.89$
17. 0.459
19. $- 0.7620$
21. $- 3.910$
23. $- 0.6188$
25. $237.99 °, 302.01 °$
27. $66.40 °, 293.60 °$
29. $91 °, 271 °$
31. $119.5 °$
33. $263 °$
35. $312.94 °$
37. $299.24 °$
39. 0.5
41. $- 1$
43. $- 0.7003$
45. $- 0.777$
47. $<$
49. $=$
51. $- 0.9659$
53. $\cot θ$
55. 0
57. 0.0183 A
59. 12.6 in.

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Basic Technical Mathematics, 11th Edition by Allyn J. Washington, Richard Evans