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 116
. chains. = 49-065. 2AB2 2 = 82-950-= 102-640 += 56-170 += 186-019 += 28-667 + 241-481 The same rule in regard to the plus and minus areas is hereobserved as in the first method. The agreement of the two methods is good evidence in favorof their accuracy. § 7 4. Examples for Practice. 1. From the… … 106 SURVEYING. [chap. VIII. 2. Compute the area ofthe adjacent field, havinggiven as follows: FA=S. 77J° W.FB=S. 65i°E.FC=S. 22° E.FD=S. lli° W.FE=S. 30° W. 10-77 Am. 5A. 2fi. U\P. 5-00 clis.4*69 6-429-42 3. Plot and com-pute the area of thefield, whose field-notes obtained in theusual way are as…
Plane trigonometry · Surveying
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