A system of geometry and trigonometry : with a treatise on surveying ... in which, also, the principles of rectangular surveying ... are fully explained: with a complete series of mathematical tables, and the necessary explanations (1830)
Flint, Abel, 1765-1825, Gillet, George, Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Hartford : Cooke & co. · leaf 54
the third course added to 37° thefourth course is 54^, which subft-acted from 180° leaves 126»,according to rule 3. The fourth and fifth courses are onesouth and the other north, and both west. According to rule 2,37*^ the fourth course added to 49° the fifth course, the sum86° is the angle at E. A… … 52 SURVEYING. Ch. L. AB. N. 56° 15 E. 21.60 BC. N. 26 30 E. 13.44 CD. S. 71 30 E. 18.96 DE. S. 26 30 E. 13.44 EF. S. 71 30 W. 18.96 FG. S. 45 0 E. 8.47 GH. s. 63 30 E. 13.44 HI. N. 45 0 E. 8.47 IK. S. 26 30 E. 13.44 KL. s. 45 0 W. 8.47 LM. s. 63 30 W. 13.44 MN. N. 76 0 W. 24.73 NA. N. 36 45 W. 30.…
Surveying
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