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 188
nd the angle c. (533)As Rad ~ qo0oo 10,00000~) To cof. gn. A. b= 62 52 9,65902 J Obtufe, being like fide op. req. Z, ;>ot. S.op.re.Z,AB:=i 14 30 10,34129 V The given angle being acute. I Take the diff. between m and bq, To tan. m =34 59 10,00031 and tis 780 19, call it n. As fine n =3 780 19… … To tan. req. Z. c=i ■- ■ * As Rad : To cof. gn. Z. b:Sot. S.op.re. Abc: - To tan. of M — To find the angle a. (533)900 oo 10,00000^ 62 52 9,65902 I Acute, being like fide op. req.56 40 10,18196 iThe given angle being acute. ——— [Take the diff. between 34 44 9,84098 and tis 790 46, call it n. Z..…
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-65-41.webp)
