Divifto ArcHS in Limho ^airantU (alinfve 
ejufmodi Infimmenti) per Circulos Concent 
tricos^ & KeHam Viagonalem. 
Sk Latitudo Umbi (KLzz )\^JiadiHs chrcu- 
It intimi ( AK= ) R» extimi ( AZ = AL- ) 
L+R=2 5 continentes Angulum (^AZ^)^y 
dividendum in fanes quotlihet £qHales( quarum 
numerns n, J KeBis z^^c^&c, (quarum longitw 
do qudritur^) facientihm , ad KZ diagonalem, 
Angulos /3, 7, &c. Adeoque RAa=rjA, 
Vatis ergo Crurihus R^Z, cum Angulo con- 
tento A, (adeoque reliquorum fumma 0+V, /«- 
ventuntur reliqui^ (O ohtufm^V acutus :) Nam 
Z + R . Z--R : : tang;, "ill. tang;, 
Veinde \ Cognith Angulis 0^&~h^ '( adeo- 
que reliquo ajcnm interje^o LatereK > habetur 
Lam z. 
Nempey 
pari modo^ ex cognitU < ^ 
Praxis. 
R=i. L=o, 2. 7==:i,2. A=lo'. Ergo O t V=i7o*' <o' 
04^=^85.0, 55^ ' turn - ^ ^^'50. 
Z + R=2, 2. Z— R==o, 2 : : 
Sic tang',^X:=.6^7,'S^^26p3. ad ei.'^o^^^i-j^taHg.'iry. cut re- 
fpondet Angulus Sp\')\o'\iy"',proxime. Ergo °-±Z+:zZ=0=J7p\o',o",i7'" 
fere, Chjhs Sinus 0,01745 1 r : nempe idsm cum fmu o'',5p',5p",43"'. * 
' Deinde ^ fecanduf fit Angulus A, in 10 partes^ quoru?^ qu£libet f. Su£- 
.rHnturigitur^2^^^c^i^Q^{^^,\\. Nempe^ ; 
IjOoOOOsrR . 
Sin',A Co^58^5P^43'^)o,OI7Ido3.RsI: :^i^iOr:o,oi745ii.r^oid^4:::a.^^^4 
Sin;^ Co, 57? 43O o,oi68^P4.R=i::^i^^Oc:o,oi745iia,o3448=b.^754 
Sin\y(o^ 5d, 5^, 43J 050i^578o.R=;i : ;^i«iO=:o,oi745i 1.1^052^4=0 ^^^^ 
.9?;7^<rCo, 55, 5P, 43,J 0,01^2877, . j.,07i44K:d.^^^Q 
Sin-,((o, 53,55?, 43,J o,ci57o<5o, j,iifio=:f. 20ip 
.V?>;»Co, 52,5^^ 43J 050154152. I,i32cd=.g.2^^^ ' 
'^'Wo, 51^5^. 43 J 0,0151243. i,i5383=:h.2'77 
Sin-^i (o, 50, 5P, 43J 0,0148335, j,i7d475:,[. 
1,200003=2.^^53 
Praxis 
