Philippi Lansbergii Triangvlorvm geometriae libri qvatvor : in quibus novâ & perspicuâ methodo, & apodeixei [romanized], tota ipsorum triangulorum doctrina explicatur .. (1631)
Lansberge, Philippe van, 1561-1632 · Amsterdami : Apud Gvilielmvm Blaevw · leaf 127
125 GC'EO METRI JA T RIA N/G.V;L OUR V. M LIBER IIIL De Cakulo "Triangulorum Sphericorum. T … vo Tatio premi[fo tratlatu nobis fu[é explicata eft :. Poflerioris, demonsiratio boc libro contiactur. | 2. Triangulum Spharicum, eft figura in fpharicafuperficie,trium maximorum Sphic- rae arcuum concurfu, conformata. Talis est in adjetlo [chemate , fiauya AB C, vel b iC | ABD. — [y . 3. Maximi…
Trigonometry -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
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