E C L I P S I S S O L I S. 549 



Ex trigonomctricis fiippouo , quod , pofito fi- 

 nu toto — R, fit 



lu triung. O M Q. cof. O ~ R x —rxKoTTSiT^ 



ct fimiliter 

 in tnang. O M P cof. O — R >« — nrw oTolp — ■ 



Sint MOz=« 



MP=:^ 



MQ^— c 



ratlo OP: OQ_—ni m 



Oi^—x 



ideoque OP rr^. 



Habcbitur ergo ex duplici ipfius cof. O valorc fe- 

 qucns aequatio 



2 ax i^JL? 



quae rite transformata producet 



m f , , n c mb .» 



fi brcultatis caufa ponantur 



Sic dahitur x feu OQ. 



Zz2 3 Fiat 



