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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis (shelfmarks Leibn. Marg. 100:1/2, Stück 2; Leibn. Marg. 100:1/2)
# Folio 866, page id 851708439:0890
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866
IRIGONOMETETA
L+
In Triangulo Rectaneulo, angulorum Acucorum unus est Complemencum alceri.
us: ideoque daco uno dacur de alcer. Pc in Priangulo obliquangulo dacis 2 angu-
lis, vel duorum lumma, dacur cercius nempe reliduus summa ad 180.
Frianculi rectanculi casus sextem.
Data jguae Tica,
provorciones
AB. CG BF R. AB: : P, A. BF
AB. LE AF S, C. AB:
2
vel R. AB:: s, A. AI
AB. AE CE AB. R:: AB. S, F
AB. AF BF
AF. R:: AB. S, F.
R. T, A:: AB. BP
vel. V: AF F AB. ZKI
AB BF: : R F, A
AB. BK AE AB. BE:: R, P, A.
S, A. R:: BH. A F.
AC. L4 AB R. S, C:: AP. AB
axioma Sccundum.
In Friangulio univetuts lacela lunc proportionalia sinibus angulorum oppolico.
e A E. R:: BF. S, A. 5 =B L. AL:: dy A. 3, D. vel OL. S, A:: AC. 5, C.
rum. Nam demilta perpendiculari.
pac. pul.
OL. R:: BF. S, O.
Friangulorum Obliquaneutorum cafus 6.
2l. L0P1L0P.
DE. AF. A (OIOF. S, A:: AL. 5, O.
ElIC vero ex operatione non constabit an angulus
quaticus sic acucus vel obcutus: cum areui de ipsi.
us supplemenco sic idem Sinus. Species itaque an-
veltiganda.
lEricque S,O. AL. D, L. AO.
A. O. AF IOEIS, O. AR.: S, A. OF
guli ex daca aliqua ecasctonis circumltanca elt in-
DE. A AEIAOIOE S, A: AE. S, O. Tumcoenuis O e A copnoscetur LeriIS LP.
L. L
 Goe shoc
Axioma Tercium.
Dacisangulo CBB, de crurum eB, BD LoCacictimis, invenire reliquos ansu.
losC, D. Qui calus est perpenus in caleulo loci Planeta.
Dem: Suipca BH = BC, de HF == s HD, erIEBF = 3 Z CY, dCCD = 3 X C1. de
LBCH = = LLC _ LACD = =ZCL. Per A medium rectae CH ducacIEBC.
Tum penco C A radio, B A est PangenS LBL A, de AC Cl FanvenSL ACG. Sed
AE ett H ~D. eBOBR. C D:: BA. A6. 1. C. 3C1. 3461:: L3 Cla. 3ALL.
Le
Oi
vel ZCF. KC1.. 1