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 151
gles to ae, cutting the given obHque cir-cle in b.T A ruler by e and b gives b-t make b p, bq, eacl K = chord of go*. A ruler by e and p gives, in the diameter thro b, the point p, whiclis the pole required. And a ruler by e and q gives, in cb continued, the point o^for thiother, or oppofite.or… … 446. PROBLEM IV. To meafure any arc of a projected great circle: Or in a given projeSleigreat circle to take an arc of a given number of degrees. General Solution. Find the pole of the given circle. (444, From that pole draw lines thro the ends of the propofed arc, cuttingthe primitive circle. Then…
Navigation · Nautical astronomy · Fortification
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