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 172
dif.of: And if bc is I unlike {_ A 1 Then z_acb = m + n only; and ab) z= M + n only. … 505. PROBLEM II. In the oblique angled fpheric triangle abc.Given two angles Z_cab, ^cba ) RequiredAnd a fide oppofite one of them ac } the reft. 1 ft. To find the fide oppofte the other given angle,viz. cb.Then, As fin. Z_cba : fin. ac :: fin. Z_cab : cb.Or fin. one ang. : fin. opp. fide : : fin.…
Navigation · Nautical astronomy · Fortification
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![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-66-43.webp)