34 D£ REBFCTmE tmEAWM CVBJ^AWM. 



Scholion. 



Jti' 5°' Q}iSf"-^'^iTi^'^"r" cx panibola logirithmi ad qiia- 



dratiiram circiili reuocantur , ita,fi pro cuni.i A M B liuc- 

 a rc<ftific;ibilis accipitur , linea reda ;\d ;ircum circubrem 

 reducetur , ficque viciiTim linca red.i cxhibcri poterit , 

 quae arcui circuli proxime fit aequahs- Ita fi curua A 

 M B hac aequatione exprimatur j— Va:— J a: V.t : erit 

 jpfe cunu\e arcus AM=zVji--|-'j .vV.v ; et fumta atzt i 

 — AC, erit apphc.ita BCzr|,normaUs ad curuam , ideo- 

 que arcus AMB amplitudo anijulus rcdus ACB;ct cur- 

 ra AMBrr ^ Quod fi iam capi.uur arcus AM am- 

 plitudinis ANMn:'!.', atque in MN demitttitur pcrpcn 



diculum QS reperietiir MS rr | ( cof v-t- — 7;-- ) \nde 

 pofito radio circuU , —r cuius quadrans rrAMB— *ob 

 fl— 1 et ^rrl erit : 



T- Tn (J+l (cof % +cof V' 4-cof. V + . . . +cof ^-^'i ) 



+i( i+toft + i+cof.^+ 14-cof .^^e 



4- I-i-CQl. '^ilf } 



Jeii priorem fcrlem fummando : 



r^ — ^- 3«tang. r -f -\ ( I -hcol. ^ + i -fcof. if -f . .. 



At pofito TT— 2^, (eu I : TT , nitionc diamctri ad ptriphcri- 

 »m , crit : — V , idcoquc r ^ -'^ , vndc pcriphcria tt 

 per feticm algcbraicam cxprimitur. 



Prob- 



