I. Rcfbliitio cofiniis angiili multipli «(J) 



in tuclorcs. 



§. c. Ciim fit, \t modo vidinius, 



cof. ;; Cp ~ i («" ^- ^<~"), 

 totiim ncgotium luic redit, vt formiila i/'' -*-//"" iii fiios fado- 

 rcs rc(blii;uiir. Facik autcm pcrfpicirur, finf',iiIos liuius fbrmu- 

 lac fadorcs t.ilcm formam cire habituros: // — 2 col. oj -}- tt~', 

 ac numcrum talium fac^torum c(I'c dcbcrc ~«; qtiandoquidem 

 fi n huiusmodi fadorcs in fc inuiccni multipliccntur , lunui.a 

 poteftas pofitiua ipfius u vtique prodibit //", fumma aurcm po- 

 tcrtas negatiua =w~""; ex quo nece:'c cll, vr omncs porcs- 

 tares inrcrmcdiac ipfius // fe muruo dedruanr. Ex hac igitur 

 conditione flngulos angulos w dcfinirc oportcbit, id quod vti- 

 que infignem laborcm poflularct ; vudc hanc inuclhgationcm 

 cx ipfa indolc faclorum dcriucmus. 



§. 3. Hic autem perfpicuum cfl , fl haec formnla ; 

 u — 2 cof u -f- ^'^ ', fucrit faiftor formac propolirae u^-\-u~'^^ 

 angiilum oj ita comparatum elle dcbcre , \t ii Ibitucrctur illc 

 tactur u — 2 cof oj -r- «~' ^^ c, tuin ctiam iplii forma propo- 

 fita tt" H- «"" " ad niliilum rcdigcrcair. Ncquc ^cro hic putan- 

 dum cfl, iHam fornuilam rcucra nihilo acqualcm iiipponi, lcd 

 tantum hypothcticc aniritur, fi ilbi formula, cllct ro, ctiamfi 

 id ficri ncqucat , tum ctiam ipfam foniiam propofiram in ni- 

 hiluni cffc abituram; qucmadmodum fcilicct nouimus, fbrnui- 

 lac 1 — .V .V fadorcm cffc i — .v , propfcica qiiod pofito 

 I — xiic^ fiuc jf~i, criam fiat i — jf.v~o, ctiamfi quaii- 

 titas X fbriaffe nunquam vnitati fiat acqualis. 



§. 4. lam vcro fl cfTct // — 2 cof w H- «~' zr o, indc 

 forct w - cof. u, -♦ |/ — I fin. 00, quamobrcm hic valor , in for- 



iiiam 



