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21. sin A =

csc A =

22. sin B =

csc B =

23. sin B =

143; cos B = 4; tan B = 142
13.

16

cot B; sec B = 1;

95
19; cos B=1; tan B=1; cot B = 16; sec B = }}}};

OSC B = 193.

95

[blocks in formation]

95

24; cot B = 2; sec B = 8:

[ocr errors][ocr errors][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]
[blocks in formation]

28. 1.0353.

34. 0.0054.

29. 4.8097.

35. 2 sec 10°.

30. 4.8097.

36. 2 csc 10°.

4. 0.5000. 10. 0.9945. 16. 0.8192. 22. 0.3839.
5. 0.0872. 11. 0.9703. 17. 11.4301. 23. 1.0000.
6. 0.2419. 12. 0.9703. 18. 11.4301. 24. 1.0000.
37. 2 cos 15°.
38. 3 sin 20° > sin (3 × 20°) and > sin (2 × 20°).
39. 3 tan 10° <tan (3 × 10°) and > tan (2 × 10°).
40. 3 cos 10° > cos (3 × 10°) and > cos (2 × 10°).
41. No.

[ocr errors]

42. The sin, tan, sec increase and the cos, cot, csc decrease.

[blocks in formation]
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