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 157
latere CD. O. AD , wars modis patefcit bafis A C part. 26 22' 20 ; Que fuermt imvefiiganda. | Tertio,datis duobus lateribus,& angulo ab iis comprehen- fo, tertium latus, & anguli reliqui innotefcunt. Perpendicu- laris enim arcus, à termino lateris alterutrius dati;in reliquum datum (fi neceffe fit… … | ADQC, znmenitur per. 4 porifgpa 12, ba- jus, vel per alia, quia plura data funt, part. Ay $4 16 , minus latere B.C part. 60. Itaque B D est part. 14, $ 44 . C perpendicularis AD. fn- tra Triangulum cadit. Porro ex lateribus AD. €9 BD m Triangulovetlangn- lh ADB cognitis mentum bafis A B ,per y…
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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