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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)
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Cap. V
LLA GUL AR FBI S.
FLMMIlIter, ODC 6 30,1, _C. 92, 93, _C. 2047 205, _C. (uF 2d 523 dCHI CIL
procedere licebit ad Arcus per Guacrantes graduum determinandos. LF ulera li
LLDCL.
Nos aurem Dimidiis gradibus concenti, hic subsistimus: cum jam Subren Fas axta-
rimus  Selgui Bractibuo LOHUS demletcumtereme adeoque d torius Cix-
cmetenta.,
De Canone Subtensarum e Sinuum: Tancentium
item  Secantium.
L.L ea quae Capire praecedente tradita LunE: Facile est construere Cano-
tem Subrelidrum seu Chordarum, per Surdas Radices delignatarum, ad
singulos Selqui gradus torius Semicirculi. Ouarum Semistes sune Sinus
Recti pro lingulis gradtuum Dodrancibus torius Ouadrancis.
Indeque, ( opuS Sic, deduci postunt Fangentium et Secantium Canones, Sur-
dis irem Radicibus delisnatarum.
EE carundem ope, poterit quispiam C. cui id lubitum est) vel novos Canones,
Numeris Absoluris, rero proximis, condere; aut jam conditos examinare.
Nam pro qualibet Subtenla, ordine quarenda, non nis una Radicis extractione
opus erit, (e Paepe ne hac quidem;) Sed quod reliquum est operis solis Adcicioni.
bus ee Subductionibus perasitur; aut salrem Dirisionibus per 2 aut 4.
Exempli gratia. Posito Circuli Radio R = +. Tum (propter Radios omnes
in eodem Circulo inter (e aequales) C =D = 1. Ec Cimiliter Cq- D9--CD =- L.
Pricque B subrensa anguli propoli.
ErSO (per S F Cap. praced.) Ouadratum Subtentae graduum 00, est Bg =
Cg. FD9 = F F F = 2. Iplaque subrensa B = V 2. Oux habetur unica exira-
etione quadrarieae Radicis numeri 2; concinuandae quousque libet in partibus deci-
malibus. PuTaVZ ==F, 42421356 Y Proxime.
Trem (per 52 ejusdem) Ouadratum Subrenia gractuum 120, est B9 = C. 9. f
D9  CD =L F 5 F 5 = 3. Iplaque Subcena B =V 3. Ouxe similicer habetur
unica excractione radicis numeri 3. Puta V 3 = L. 7320508F- proxime.
Ouadratum Subrenx graduum 60, cst (per 53) B9 = Cq + D4 - CD 
= F = + = F. Adeoque Subtensa B = X.
Catera vide pas. 500. post Tabellam, hic inserenda.
Sequitur Canon, seu Fabula, Subtentarum radicibus surdis desixnatarum, pro
singulis Sesqui gradibus rorius Semicireuli, (adeoque d pro Reliduis ad Circu-
lum inceorum, quorum subtenta exdem sunc cum hisce.) Posito Radio R = F.
ad eoque C =D = +. Trengue C9 =Dg =C D = L. QuibUS PPXMILUNEuE;
in marxine, sectiones Capicio praececencis unde derirantur.
rac.