Plane trigonometry, and its application to mensuration and land surveying. Accompanied with all the necessary logarithmic and trigonometric tables (1852)
Perkins, George R. (George Roberts), 1812-1876 · New York, D. Appleton · leaf 109
= 4-6442 field ABCDE = 27*9305 After finding the diagonals CA and CE, we might have com-puted the areas of these three triangles by the Third Rule, Prob.HI., Chap. Y. After a similar manner we might divide any field, which hasbeen surveyed with the chain and compass in the usual way,into triangles,… … Stationary line AB, !N Bearings of Cornersfrom Station A. AC = N. 45i° W.AD = N. 9J° E.AF = K 70i° E.AG = S. 84i° E.All = S. 56i° E.AL = S. 20i° E. 771° E. 5 chains. AM = S. 3i° W. Bearings of Corn/ rs from Station B. BC = N. 7.81° w BD = N. 48i° W BF = K 591° E. BG = 6. 65|° E. BII = S. 22° E. BL…
Plane trigonometry · Surveying
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