Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 123
lengtlis and hearin<;s of :ill the courses except A / are known; and the length and boariiii; of A r may be found as in Art. 142. Then in (he triangle APB, the length of AP i\m\ A B are known, and (he angle .17V>(whicii is the sum or di(Terence of the bearings of BPaml AP); hence, as in Art.… … 111. The bearings of two courses when they are (1) contiguous; (2) separated. 145. First.—Example when they are contiguous. In Tig.75, let the bearings of DE and EF be unknown. Draw a linefrom D io / and find its length and bearing from the lati(udesand departures of the other courses as belbre.…
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