Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 96
ance BB equal to 200yards, and the following angles taken, fAFC = 83° 00, BBB = 54° 30,Tiz., iACB= 53° 30, BBC = 156° 25,ACF= 54° 31, BBB = 88° 30. Ans. AB = 345.467 yards. SEC. I.] HEIGHTS AND DISTANCES. 93 6. From a station P there can be seen three objects, A, B,and C, whose distances from each… … ^-. GEOMETRICALLY. With the three given sides constructthe triangle AB C. Then, at A lay off theangle PAD = 22° 30, and at P the angleAPP = 33° 45, and note P, the point atwhich the two lines intersect. Through the points A, P, and B de-scribe the circumference of a circle, andthrough C and P draw…
Surveying
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