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 189
To cof. m = 99 28 9,21610] And is obtufe, being unlike b, becaufi So tan. gn. fid. ac= 83 13 10,92464 )-the angle oppofite to the fide require* ■ J is obtufe. To tan. req. fid.ab=i 14 30 1C34T40J … To find the fide BC, (535)As Rad rr 900 oo7 \0,00000^ Tocof. gn.fid.AC= 83 13 9,07230 J Acute, being like Z. op. fide required?Sotan.Z.op.r S.a= 48 31 10,05345 vthe given fide being acute. ■» : Take the difF. between m and Z. c | To cot. of m sr 82 .23 9,12575 and tis 420 57, call it n. As cof. n…
Navigation · Nautical astronomy · Fortification
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-65-41.webp)
