This section is from the book "Safe Building", by Louis De Coppet Berg. Also available from Amazon: Code Check: An Illustrated Guide to Building a Safe House.
Degree. | For angles under 45°. | ||||||||
Sine. | Covers. | Cosecnt. | Tangt. | Cotang. | Versin. | Cosine. | |||
0 | 0,00000 | 1,00000 | Infinite. | 0,00000 | Infinite. | 1,00000 | 0,0000 | 1,00000 | 90 |
1 | 0,01745 | 0.98254 | 57,2986 | 0,01745 | 57.2899 | 1,001115 | 0,0001 | 0,99984 | 89 |
2 | 0,03489 | 0,96510 | 28,6537 | 0,03492 | 28,6362 | 1,00060 | 0,0006 | 0,99939 | 88 |
3 | 0,05233 | 0,94766 | 19.1073 | 0.05240 | 19.0811 | 1,00137 | 0,0013 | 0.99862 | 87 |
4 | 0,06975 | 0,93024 | 14,3355 | 0,06992 | 14.3006 | 1,00244 | 0,0024 | 0.99750 | 86 |
5 | 0,08715 | 0,91284 | 11,4737 | 0,08748 | 11,4300 | 1,00381 | 0,0038 | 0,99019 | 85 |
6 | 0.10452 | 0,89547 | 9,5667 | 0,10510 | 9,5143 | 1,00550 | 0,0054 | 0.99452 | 84 |
7 | 0,12186 | 0,87813 | 8,2055 | 0,12278 | 8,1443 | 1,00750 | 0,0074 | 0.99254 | 83 |
8 | 0,13917 | 0,86082 | 7,1852 | 0,14054 | 7,1153 | 1 00982 | 0,0097 | 0.99020 | 82 |
9 | 0,15643 | 0,84356 | 6.3924 | 0,15838 | 6.3137 | 1,01240 | 0,0123 | 0,98768 | 81 |
10 | 0,17364 | 0,82035 | 5,7587 | 0,17632 | 5,0712 | 1,01542 | 0,0151 | 0,98480 | 80 |
11 | 0,19080 | 0,80919 | 5,2408 | 0.19438 | 5,1445 | 1,01871 | 0,0183 | 0.98102 | 79 |
12 | 0.20791 | 0,79208 | 4,8097 | 0,21255 | 4,7046 | 1,02234 | 0,0218 | 0.97814 | 78 |
13 | 0,22495 | 0,77504 | 4,4454 | 0,23086 | 4,3314 | 1,02630 | 0,0256 | 0.97437 | 77 |
14 | 0,24192 | 0,75807 | 4,1335 | 0.24932 | 4,0107 | 1,03061 | 0,0297 | 0,97029 | 76 |
15 | 0,25881 | 0,74118 | 3,8037 | 0,26794 | 3,7320 | 1,03527 | 0,0340 | 0,90592 | 75 |
16 | 0,27563 | 0,72430 | 3,6279 | 0.2S674 | 3,4874 | 1,04029 | 0,0387 | 0,90120 | 74 |
17 | 0,29237 | 0.70762 | 3,4203 | 0,30573 | 3,2708 | 1,04569 | 0,0436 | 0,95630 | 73 |
18 | 0,30901 | 0,69098 | 3,2360 | 0,32491 | 3,0770 | 1.05140 | 0.0489 | 0,95105 | 72 |
19 | 0,32556 | 0,67443 | 3,0715 | 0,34432 | 2 9042 | 1,05762 | 0,0544 | 0,94551 | 71 |
20 | 0,34202 | 0,05797 | 2.9238 | 0,36397 | 2,7174 | 1,00417 | 0,0603 | 0,93969 | 70 |
21 | 0.35836 | 0,64163 | 2,7904 | 0,38386 | 2,6050 | 1,07114 | 0,0664 | 0,93368 | 69 |
22 | 0,37460 | 0,02539 | 2.0094 | 0,40402 | 2,4750 | 1,07853 | 0,0728 | 0,92718 | 68 |
23 | 0,39073 | 0,60926 | 2,5593 | 0,42447 | 2,3558 | 1,08636 | 0,0794 | 0,92050 | 67 |
24 | 0,40673 | 0.59326 | 2.4585 | 0,44522 | 2,2460 | 1,09403 | 0.0864 | 0,91354 | 66 |
25 | 0,42201 | 0,57738 | 2,3662 | 0,40030 | 2,1445 | 1,10337 | 0,0936 | 0,90630 | 65 |
26 | 0,43837 | 0,56162 | 2.2811 | 0,48773 | 2,0503 | 1,11200 | 0,1012 | 0,89879 | 64 |
27 | 0.45399 | 0,54600 | 2,2026 | 0,50952 | 1,9626 | 1,12232 | 0,1089 | 0,89100 | 63 |
28 | 0.46947 | 0,53052 | 2,1300 | 0,53170 | 1,8807 | 1,13257 | 0,1170 | 0,88294 | 62 |
29 | 0,48480 | 0,51519 | 2.0626 | 0,55430 | 1,8040 | 1,14335 | 0,1253 | 0,87461 | 61 |
30 | 0,50000 | 0,50000 | 2,0000 | 0,57735 | 1,7320 | 1,15470 | 0,1339 | 0,86602 | 60 |
31 | 0,51503 | 0,48496 | 1.9416 | 0,60086 | 1,6642 | 1,10003 | 0,1428 | 0,85716 | 59 |
32 | 0.52991 | 0,47008 | 1.8870 | 0,62486 | 1,6003 | 1,17917 | 0,1519 | 0,84804 | 58 |
33 | 0,54463 | 0,45536 | 1,8360 | 0,64940 | 1,5398 | 1,19236 | 0,1613 | 0,83867 | 57 |
34 | 0.55919 | 0,44080 | 1,7882 | 0.67450 | 1,4825 | 1,20621 | 0,1709 | 0,82903 | 56 |
35 | 0,57357 | 0,42042 | 1,7434 | 0,70020 | 1,4281 | 1,22077 | 0,1808 | 0,81915 | 55 |
36 | 0.58778 | 0,41221 | 1,7013 | 0,72654 | 1,3763 | 1,23606 | 0,1909 | 0,80901 | 54 |
37 | 0.60181 | 0.39818 | 1,6616 | 0,75355 | 1.3270 | 1,25213 | 0.2013 | 0,79863 | 53 |
38 | 0,61566 | 0,38433 | 1,6242 | 0.78128 | 1,1299 | 1,26901 | 0,2119 | 0,78801 | 52 |
39 | 0,62932 | 0.37067 | 1.5890 | 0,80978 | 1,2348 | 1.28675 | 0,2228 | 0,77714 | 51 |
40 | 0,64278 | 0,35721 | 1,5557 | 0,83909 | 1,1917 | l,30540 | 0,2339 | 0,76604 | 50 |
41 | 0,65606 | 0,34394 | 1.5242 | 0,86928 | 1,1603 | 1,32501 | 0,2452 | 0,76470 | 49 |
42 | 0,66913 | 0,33086 | 1,4944 | 0,90040 | 1,1106 | 1,34563 | 0,2568 | 0,74314 | 48 |
43 | 0,68199 | 0.31800 | 1,4662 | 0,93251 | 1,0723 | 1,36732 | 0,2686 | 0,73135 | 47 |
44 | 0,69465 | 0,30534 | 1,4395 | 0,96568 | 1,0355 | 1,39016 | 0,2806 | 0,71933 | 46 |
45 | 0,70710 | 0,29289 | 1,4142 | 1,00000 | 1,0000 | 1,41421 | 0,2928 | 0,70710 | 45 |
Cosine. | Versin | Secant. | Cotang | Tangt. | Cosecnt. | Covers | Sine. | Degree. | |
For angles over 45o. | |||||||||
Note : If angle is smaller than 45o use top beadings and read downwards, 11 greater than 45o. use bottom headings and read upwards.

If angle C B A = 90° and A C = 1 then:
FOR ANGLE C A B. | ||||
Sine | = | CB | ||
Coversine | = | HI | = | GC |
Cosecant | = | A F | ||
Tangent | = | K E | ||
Cotangent | = | HF | ||
Secant | = | A K | ||
Versine | = | B E | = | C D |
Cosine | = | A B | ||
If angle C A B = A and angle ACB = C; and A + C = 90° ; and A C = c ; CB = a; and A B = b, then :
Sine A | Cosine C | = | a/c | |
Coversine A | = | Versine C | = | c-a/c |
Cosecant A | = | Secant C | = | c/a |
Tangent A | = | Cotangent C | = | a/b |
Cotangent A | = | Tangent C | = | b/a |
Secant A | = | Cosecant C | = | c/b |
Versine A | = | Coversine C | = | c - b c |
Cosine A | = | Sine C | = | b/c |

 
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