Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 189
AB = 536 yardsBAW= 40° 16viz.: \ WAE = 57° 40ABE = 42° 22EBW = 71° 07; required the distance EW, Ans. 939.617 yards. fig. loo. 5. Wanting to know thehorizontal distance between twoinaccessible objects A and B,and not finding any station fromwhich both of them could beseen, two points C and D…
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