Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 340
51 56i2= 33° 1841 log sec = 0.00615log esc = 0.00871 log cos = 9.76004 log sin = 9.73972 2)19.51462 log sin if = 9.75731 h. m. 4 39 3+ 2 30 Eq. of time. m. s. 2 28.191.65 2 29.84 Equation of time = Local mean time = 4 41 33 p.m. Diff.forlh. B. - 0.648 1.296.324.032 1.652 2.5 .05 §29. Latitude by… … Fig. 25. QS = d = the declination of the body.HS= h = the true altitude of the body.SZ ■— z = 90° — h == the zenith distance of the body (namedN. or S. according as the zenith is north or south of the body).QZ = PW = L = the latitude of the observer.QZ = SZ + QS, or L = % + d. 78 NAVIGATION If the…
Trigonometry · Surveying · Navigation
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