Inside Out Library

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 184

An illustration from The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ..., 1754, leaf 184
e<* CONSTRUCTION. To put either legt as CB, en the primitive circle. Having defcribed the primitive circle, and drawnthe right circle ob. j Then (461) defcribe the oblique great circlecad, cutting the primitive circle in the givenangle c, and the right circle ob in the given angleA. The fides… … Computations. To find the leg cb. (524) As fin. Z. adj. req. leg, c es 64* 35To Radius • =90 00 So cof other angle a = 48 00 To cof. of its ©p. leg cb —42 12And is acute, becaufe the oppofite Z, is acute.To find the leg ab. (524) As fin. Z. adj. req. leg, a = 48* ooTo Radius - = 90 00 $0 cof. other…

Navigation · Nautical astronomy · Fortification

Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.

More pictures from The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ...

More like this