CORrORVM PvIGIDORVM. s.^'^ 



cf>CB^, conftdcr.tnda aflrumfi. Qimm ciiim in Tab. IIT. 

 priori b;U)ercm quntuoD latcra Goguita , A a, B <!> , ^''^" ^^" 

 A B — 9D° <.c « 6 := 90", et in poUeriori itc;n qua-» 

 tuor latcra cognita Aa, Cc, AC — 90" etrtf— 90°, 

 i:im cogitare coepi, quomodo iinguli B A a, AaA, 

 C A ^, c a Ay ope arcuum A a, B If, Cc detcrmina- 

 ri poflcnt ; illa fcilicec relatione in vfum vocata , 

 quod lit C Aa zzB A a — po° et(raA — baA-\-'go°, 

 Hoc igitur agens ad iibs binas perdudus fum ae- 

 cjuutiones : 



eof.B^fin.BA^.fin.^aA— cof.Ai/.cofBA^.cor.^^A. 



coLC <r zzcof x\ a, fin.B A 4. fin.^ (2 A- cof B A tf.cof.^aAy 



qirarinn ope has binas alias colTegi , 



cof BZ^.cof. Afi! — cof Ct — fin. Afl^cofBAtf. cof^flA 

 Gof BZ?— cof Ai7. cof Cf. rrfin. Aa\ fin. BAfl.fin.Z?«A. 



Si ex his acquationibus ehminetur angulus B A ^; 

 obriiTcbitur acquatio, quae praetcr aicus A ^, Bi^, Cr, 

 non continet nifi anguium b a Ay vnde ob cof. A ^ 

 ~ fin. A a. cof b a A , in procliui erat aequationem 

 inticnire , quac praeter A a, ,B b, C c, non continct 

 nifi A ^. Verum, quum liac ratione ad aequatio- 

 iicin perueniretur biquadraricam; leui adhibita atten- 

 tionc , pcrlpexi tanto molimine non effe opus , quia 

 €x i(la aequaiione : 



cof.B^.cof Aa-conCf^fin.A/.coCBA^.cof^^A, 



ll.itim deducitur valor produ(fli cof A ^. cof B^. 

 Simili ratione , qaum produc'^.i coC A e. cof C a et. 

 c. /f B f. cGf C ^ determinentur , nunc id lantum re- 

 ftubat , vt' quoquc iCla produda 



cof. 



