fix — 0/tang. : |j. =1 2 cof. ,: ^ tang. : jji. , 

 cc ob tiiangiila 0/|x ct OFM fimilia 

 0/:/ixzz:OF:FM, vnde fit 



F M —fjtl^ ^^-JL — - ^'"'"g- ^ M- 



o/ "~ cor..:^ • 



Hinc fiimto angulo /x — 90% piindum /t ab O quadrantc 



diflans ita in K erit proiediim, vt fit FKr:— ?— r;, idcoquc 



col, i,,4 



tota reda proiedionem circuli minoris exhibens erit 



cof.i^. 



Ceterum hic notafTe iuuabit, fi ducatur ad puntftum m ar- 

 cus circuli vcrticalis Aw, isque dicatur o), tbre 00^1« 

 =r cof. i <^ cof. i fjL , arcus vcro w/=|xcor. i^. 'Vicifrim 

 •autem, cognitis AF ct FM, quas ponamiis AF — fl et 

 FM — ^, ex proiecflione ipfe circulus minor dcfiniri po- 

 terit. Cum enim fit tang. \ c^ — \a crit 



ideoque radius ciiculi minoris 



cO — e fzz — — - ct arcus 



vtj— A tang. — — -- , 



lob tang. : |x =: ; ^ cof. i <^ hincquc |jt. - 2 Atang.^lZrcof.'^). 



Tdb V. §. 5. Confidcrentur nunc tria puu^fla proxima /, 



F'S- 3. w,«, in fuperficie (phacrae, arcubus circuloruni maximo- 



tum fm, timf quos vclincas rcdas fpeflemus, iunda, lint- 



que 



