The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ... (1754)
Robertson, J. (John), 1712-1776, Adams, Charles Francis, 1807-1886, former owner. BRL, Adams, John, 1735-1826, former owner. BRL, Boston Public Library) John Adams Library BRL · London : Printed for J. Nourse ... · leaf 153
nce of the poles c, p, is equal to the in-clination of the planes of the circles ad, ab ; (4J3) And confequently meafures the angle dab. 449- PROBLEM VI. Tlvo* a given point in any projecled great circle, to defcribe another great)circle at right angles to the given one. General Solution. Find the… … iff. T0jen bad is the primitive circle whofe pole is PA diam. thro a will beperpendiculartoBAD. (219 2d. JVloen bad is a right circle, whofe poles are Iand c. An oblique circle defcribed thro the points C, Ap, (163) will be at right angles to bad. 3d. When bad is an oblique circle, whofe pole is p.…
Navigation · Nautical astronomy · Fortification
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