& du^k Tangente DG^em 
3^ V V 
j4C Jive a b~ 
Nmc fi 
hmajor fit % dffcenda eh 
ta^gens verfus B J / aqualis^ 
fit faraliela MB $ fin mem 
minor ^du^enda e fiver Jits E > 
Mt ji. 4» diximust, 
F/i.Figv4. DetHr rurfus 
alhs S emi - circnlus inverfm, 
€HiHs fmBa referri meli*- 
gmtur ad Rdtam dUmetro 
faraEeUm^ & eidem c^quH' 
lem^ ut in fchemate»Demmim 
natis, mprihs, pdrtihs^ & 
^ ^B ^ fit aqmtio b y 
y y =:d d + VV - 2 d V. 
Igitfir A C five 
2, V V - 2 d V ^* \ • 
a — . Cum ver o m eX' 
D z y 
empio fupfofuerim^f, vfem- 
per ejfe minor em d 5 / b fit 
major 2 y , dmenda erh Tan^^ 
gens verfhs E h fi dt^ndis^ 
erlt pAraliela ^ fin minor ^mU" 
'tatis omnihus figi^i^y ducenin 
A ?A C eritverfhsh'^mn^^'S'^l* 
Nulla autem ducenda effet Tangens^ fen Tangens foret ipfii EB, fi!^p* 
pofiaifi'emm MB <isqmlem femi'diametro, five 2 d = i ^ utn, 
V. Fig. 5. Sit tmdem alius SefHi-cir cuius ^ cujus diameter N B nor- 
-maris fit ad reElam BE^ ad quam ejus pmBa referri inteUigantHr, NB 
dicatpfrhy & alia partes denominentur ut fuprk j fiet (iL/Equatio yy = 
bv-Yv; & 2l -zzz^^^j^* famfihfitmdprZviTangensduceniA 
gritverfm B % fi minor, verfius E \ fi antem aquaUs , ipfii B A erit 
T^angenSi m n, i. &^^^, 
Mt eji^ nifallor^ Cafmm mnium vm0tas ^qutt ex tSquationum 
€onfideratione deprehendipotefl, 
M^^^odovero ex doUrina Tangemium confflttnantur ^^^^^i^^^^ 
Umltesy non eft ut plurihus exponam^ cum evidens e^e exiftimem.m^i- 
mam velmimmam applkatarum velutramque (Imul determinari d Tan- 
gmtepar/Jkla : deqm&alimad Te fmpfi^ & aliquid etim attip 
