Altitude, azimuth, and line of position : comprising tables for working sight of heavenly body for line of position by the Cosine-Haversine formula, Marcq Saint Hilaire method and also Aquino's altitude and azimuth tables for line of position, Marcq Saint Hilaire method (1918)
United States. Hydrographic Office · Washington : Govt. Print. Off. · leaf 194
ments of the two right-angled triangles maye stated as depending upon where the point in the foot of the perpendicular fallson NS, the celestial meridian of the observer (see fig. 1). This is determined by therelative algebraic signs of L and d, by the relative values of L and h, and by whethert is… … (1) The point m can only fall between P and Z by the concurrence of the threeconditions that d and L shall be of the same sign or name, that t shall be less than90°, and that L shall be less than h. Hence (fig. 1) Z<90°; M = a + i8; and, puttingCfor90°-B, C = 90°-B = (90°-L)-(90°-6) = 6-L. 187…
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