<^.^ ) 333 ( Ifl-*- 

 ideoque 



s ( 6 — "_ r i^b — c ) [ h -C.I ) c of. t y . . ( h — c')^ 



Exprimatur brcuitatis graria -^ per vi et ^ per /; , fict* 

 que 



e' fin. 2 ^' :i= ( /« — I )' — 2 ( ;// — i ) ( ;/ — i ) cof. 2 5 



4- ( 7/ — I )' =z (/// - //)' + 2 ( /;;— I ' (;/ — I ^ ( r — cof. 2 5) 

 — (;//-//)'-f-4(w- i)(//- i)rin.J'-, hinc 

 ^' fin. 2.Z* — (m—nY (i -{- ^f'"— ■)(" — ■ J'"-?^) 

 vnde fi fiatuafur 



.f^-or>.--^ oiM! - Tang. ^' , fiet 

 .fin.2^^1^— et e.=:^^^-^. . 



§. 4. Quum fit ^fl rr: ^1L=^) , fi ponafur 



(I)'ii:2§4-(|), erit cof.^)' — coi: ^Jcof.Cp-fin.^^fin.Cp, 

 hinc 



ff =^ :-fe'^ = cof 2 5 _ fin. 2 5. Tang. (p , 



ex qua aequatione, angulus Cf) erui poteft, id quod com- 

 inodiflime fiet, fi ponatur 



c{b-c') _ cot «•VI 



tum enim erit 



Tang. ($1 = cot. 2 5" — cot. 2 "vj , ideoque 



Tang.Cp^:-^''-^'^---^, 



^ ' Jm. 2 T)J"J. 20' 



verum tamen formula pro Tang. ^ ( Cp' 4- (|) ) fupra allata 

 commodior omnino effe videtur. 



T t 3 $• 5. 



