Elements of surveying and navigation : with a description of the instruments and the necessary tables (1847)
Davies, Charles, 1798-1876 · New York : A.S. Barnes & Co. · leaf 119
gs will berepresented by AB, and the difference between the sum ofthe eastings and the sum of the westings by BC. The baseAB, and the perpendicular BC of the right-angled triangleABC, are then known. The angle at the base, BAC, is thebearing from A to C; or the equal alternate angle at C isthe… … WITH THE COMPASS. 115 Remark. Had any of the coursesrun south, AB would have beenequal to the sum of the northings,minus the sum of the southings. To find the angle BAG, or thebearing from A to C. As radius : tan A : : AB : jBC, ox AB \ BC : \ R : inn A X that is, As AB 87.77BC 35.29 Rtan A 21054…
Surveying · Navigation
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