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Appendix E: Table of Trigonometric Functions*

Table of Trigonometric Functions*

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Degrees Sines Cosines Tangents Cotangents
0 0.0000 1.0000 0.0000 90
1 0.0175 0.9998 0.0175 57.290 89
2 0.0349 0.9994 0.0349 28.636 88
3 0.0523 0.9986 0.0524 19.081 87
4 0.0698 0.9976 0.0699 14.301 86
5 0.0872 0.9962 0.0875 11.430 85
6 0.1045 0.9945 0.1051 9.5144 84
7 0.1219 0.9925 0.1228 8.1443 83
8 0.1392 0.9903 0.1405 7.1154 82
9 0.1564 0.9877 0.1584 6.3138 81
10 0.1736 0.9848 0.1763 5.6713 80
11 0.1908 0.9816 0.1944 5.1446 79
12 0.2079 0.9781 0.2126 4.7046 78
13 0.2250 0.9744 0.2309 4.3315 77
14 0.2419 0.9703 0.2493 4.0108 76
15 0.2588 0.9659 0.2679 3.7321 75
16 0.2756 0.9613 0.2867 3.4874 74
17 0.2924 0.9563 0.3057 3.2709 73
18 0.3090 0.9511 0.3249 3.0777 72
19 0.3256 0.9455 0.3443 2.9042 71
20 0.3420 0.9397 0.3640 2.7475 70
21 0.3584 0.9336 0.3839 2.6051 69
22 0.3746 0.9272 0.4040 2.4751 68
23 0.3907 0.9205 0.4245 2.3559 67
24 0.4067 0.9135 0.4452 2.2460 66
25 0.4226 0.9063 0.4663 2.1445 65
26 0.4384 0.8988 0.4877 2.0503 64
27 0.4540 0.8910 0.5095 1.9626 63
28 0.4695 0.8829 0.5317 1.8807 62
29 0.4848 0.8746 0.5543 1.8040 61
30 0.5000 0.8660 0.5774 1.7321 60
31 0.5150 0.8572 0.6009 1.6643 59
32 0.5299 0.8480 0.6249 1.6003 58
33 0.5446 0.8387 0.6494 1.5399 57
34 0.5592 0.8290 0.6745 1.4826 56
35 0.5736 0.8192 0.7002 1.4281 55
36 0.5878 0.8090 0.7265 1.3765 54
37 0.6018 0.7986 0.7536 1.3270 53
38 0.6157 0.7880 0.7813 1.2799 52
39 0.6293 0.7771 0.8098 1.2349 51
40 0.6428 0.7660 0.8391 1.1918 50
41 0.6561 0.7547 0.8693 1.1504 49
42 0.6691 0.7431 0.9004 1.1106 48
43 0.6820 0.7314 0.9325 1.0724 47
44 0.6947 0.7193 0.9657 1.0355 46
45 0.7071 0.7071 1.0000 1.0000 45
Cosines Sines Cotangents Tangents

∗Note: With angles above 45° be sure to use the headings that appear at the bottom of the columns.

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