[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 270
where M is to the right of M, PMZ = P M M - Z MM ; and in the second, where JVT is to the left of M,PMZ=PMM-ZMM. If M M be extended to the meridian, in the first case,P and Z are on the same side of the intersection, and inthe other they are on opposite sides; so thatqf=jPf— Q when the zenith and…
Navigation · Nautical astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.