 | Benjamin Peirce - Plane trigonometry - 1845 - 498 pages
...track ; (225) and, by (224), departure , ... /~~/»v Diff. long. — . , -, — = dep. X sec. mid. lat. (226) cos. mid. lat. or, by substituting (212), Diff....obtained, by which all the cases of Middle Latitude sailing may be solved. 34. Problem. To find the distance and bearing of two places from each other,... | |
 | Nathaniel Bowditch - 1846 - 854 pages
...latitudes, if they are of tlie same name, or half their différente if of cuntmry names. This method may be rendered perfectly accurate by applying to the middle latitude a correction taken from the table following Case VII. of this article. We shall, however, in the following examples,... | |
 | Elias Loomis - Trigonometry - 1855 - 192 pages
...latitude sailing is not perfectly correct. For long distances the error is considerable, but the method is rendered perfectly accurate by applying to the middle latitude a correction which is given in the accompanying tables, page 149. gle. The difference of longitude is derived from the departure, in the... | |
 | Elias Loomis - Logarithms - 1859 - 372 pages
...latitude sailing is not perfectly correct. For long distances the error is considerable, but the method is rendered perfectly accurate by applying to the middle latitude a correction which is given in the accompanying tables, page 149. NAVIGATION. 147 gle. The difference of longitude is derived from the... | |
 | Gerardus Beekman Docharty - Geometry - 1867 - 474 pages
...this method unless a proper correction be applied to it. Middle-latitude sailing is, however, made accurate by applying to the middle latitude a correction which is given in Loomis's Tables, page 149. The middle latitude is equal to half the sum of the two latitudes when they... | |
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This method of calculating the difference of longitude may be rendered perfectly accurate by applying to the middle latitude a correction," which is given in the Navigator, and the method of computing which will be explained in the succeeding chapter. 