[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 21
14 NAVIGATION. p : D = cos L : 1, or p — D cos Z, D — p sec X, (5) which express the relations required. (Bowd., p. 63.) These relations may be graphically represented by a rightplane triangle (Fig. 4), of which I) is the hypothenuse, L, one of the angles, p, the side adjacent that angle. The… … MIDDLE LATITUDE SAILING. 10. Problem 5. Given the course and distance and thelatitude left, to find the difference of longitude.Solution. By plane sailing, I z=z d cos 6T, p = d sin C; (3) by Arts. 2 and 6, JJ = Z + l, ZQ = J (Z+Z) = Z+} l; (6), and by equation (5), D=psecZ0, (7) or JD — d sin (7…
Navigation · Nautical astronomy
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