Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 365
riangle and the departure is thebase; the distance A C, from 1 to 9, is equal to the square rootof the sum of the squares of the latitude and departure of 9.The angle BA C may be found by the relation tan A = -^-j (Art. 35). Having found the angle BAC, the bearing of AC, withrespect to the course… … I SEC. III.] CKDEKGEOUND TRAVEKSING. 359 clamp the vernier plate, sight to station 2 and clamp the limb;unclamp the vernier plate, turn it through the bearing, as found,of A Cy and clamp it; the line of sight of the telescope will be inthe line A C. Measure the horizontal distance, as found, from…
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