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 104
1 ch.] AE =18-27ch.; BE = 17-88 ch.;BD =16-46 ch. 4. Find the area of afield whose sides and di-agonals are as follows: AB=15-30 ch.; BC=14ch.; CD=6-75cA.; DE=8-10 ch.; EF = 11-20 ch.;FA=10-20cA. ;BD=12-10ch.; BE=17-50 ch.; BF=22-50 ch. Ans. 24.4. 2B. 12P. 5. In the following field, after measuring… … Ans. 30.4. SB. 35JP.
Plane trigonometry · Surveying
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