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 102
nstruments formeasuring angles have been constructed; but in Land Survey-ing, the Compass and Theodolite are the instruments most com-monly used for this purpose. CHAPTEE YIII. Calculation of Areas Trigonometrically by Dividing the Field into Triangles. §67. Surveys with the Chain only. Measure the… … DA = 6-02 ch.; DB = 697 ch. Proceeding as in Prob. F., Chap. FZ, we have 92 SURVEYING. [chat. vm. Triangle ABE. EA = 6-53DA= 602DE = 5-93 2) 18-48 \ 9-24, log.2-71, log.3-22, log.3-31, log. 0-9656720-432969 0-5078560-519828 Leter = 18-48 2 ) 2-426325 log. area = : 1-213162 16-337 = = area ADE…
Plane trigonometry · Surveying
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