[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 15
d on theequator, is the corresponding difference of longitude. 8 NAVIGATION. 2. The following notation will be employed; the refer-ences being to Fig. 1, in which C A represents a portion ofa loxodromic curve : p C=BCA, the course.cl=CA, the distance.I = C B = E A, the difference oflatitude. p =… … : A A, the latitude arrived at,X =z the longitude left,A= the longitude arrived at, Evidently l = Zr—Z,whence Z/= L + /, hen North,when South. \- when West.when East. k—X +D, (1) in which attention must be paid to the signs, or names.*These formulas accord with the precepts on page 50 ofBowditchs…
Navigation · Nautical astronomy
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