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 135
B has already been found. § 82. To survey a field bounded by irregular lines, by meansof offsets. In the adjacent field suppose the west side from H to A to bebounded by an irregular line, as, for instance, a stream of wa-ter. Run a straight line from H to A; then, by the method 124 SURVEYING.… … angles to HA at certain points, as at 1, 2, 3, 4, 5, &c, and thencompute this area by the Scholium under Prob. IV., Chap. V.As an example, suppose we have given as follows : chains. AB, K57° E. 4-04 BC, S. 74° E. 7-25 CD, S. 20JC E. 3-87 DF, S. 24ic W. 4-39 FG, S. 52° W. 5-39 GH, S. 87° W. 3-56…
Plane trigonometry · Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
