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 162
i8c# and$40 degrees. Dim. Since Z. a and ri, z. 1 and pd, £ c anddk, are fupplements to one another. (475) Therefore the three angles a, b, c, together withthe three fides fi, fd, de, make thrice 180% or 540*. Now the Aim of the three fides fe -f- *D -r* DEis lefs than twice i8o#. (47^) Therefore… … (405)
Navigation · Nautical astronomy · Fortification
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