(^74) 



§. 2 2. Si dcmonftrationcm noftram ad ratiocinium 

 Geometricum Cel. Lamberti accommodare velimus, ponendum 

 eft rz^r^ et Cj)^ zz: — C|), vnde deducitur primum 

 r cof. (J) — cof. f (vj^ — \\j^) y^ (^ fiue 

 (i— ^-^) cofCp) _ (i — f'^)cof.K\^ — v^O 



I -+- f cof. Cp ■)/ ( n- / cof. \4y) ( I -t- / cof. vjyO 



Tumque ex aequatione 2rz=^-f-^'', colligitur 



f (cof I Cp* ri H- 0' — fin.i C^* ^i — f)^ 



' (7 -^- f cof. cp/ 



f^ Tcof i \|/* cof i v|y^^ r i-f- O^ — fin. i vly^ (in. i vly^Vi— ^'O* 

 (i -h f^ cof. \]y; (i -1- f'^ cof \^0 ' 



quarc fi ponatur 



_ cof \ (^/ (\ -\~ e) fin. l Cj)^ (i — e) . 



Ct I -'■■■■' '■'■ "' --■■■■■- ■ '■' " ■ ■- • CL 



1 -h-e cof Cp 

 (3 — <* (^cof i Cl)' (i -+- f) -h ftn. f C|)Vi — f) ) 



I -|- f cof. Cp 

 pro a^ vero et (3'' denominationes fupra adhibitae retineantur, fiet 

 lumc denuo azzza^; (3 — |3^;; hoc cft: 



e -+- cof d) cof svjycof i\i/Yi-t- /)-i-fin.ivlyfin.i\I/ri— ^O 



I -t-^ ci f. ]) /(!-]- /cof vp; (i -f- /cof \p^j 



/(cof ivjy cof ivl/ri-^-/) — fin.ivO fin.ivly^Ti — /)) 



|/ ( i -h f ' cof. \|y; ( I -f- ^^ cof. v|/0 

 Ex prlori vero concludimus quoque 



fin.Ct)/ri — f^) _ ain.^vlycof-vjy^— ftn.-\|/cofiv|y)iAi— /') 



i-i-ccofCj) )/(i-|-f'cof viyj (i-h/cof vly'; ' 



et illa per praecedentem mukiplicata obtinemus: 



tumque 

 2 Arc. cof. (£^:i2L|):r Arc. cof (!l±^)- Arc. cof (J^L±S1%). 



et 



