^34 Opuscula 
polTunt convenire . Igftur ex pundis O , M* , N' ducantur 
OP, M'H, N' K normaies illi redx , qux cx pundo C du- 
da eft parallela M N conjungenti centra corporum j & fit 
CP = ^,POr=j»,MH = NK-f, CH — m, KCzirw, 
anguli vero OCK=z rp, NCK — tt: eiit jam C O , five 
= Vtt-^yy . Verum ut ex hoc qujefiti loci xqua- 
tionem eruamus , ex / , & y determinandje funt p, & 
qua in re cum leniper prx ocuiis iiabendi fmt diverfi an- 
guii , quos diverfx communis veiocitatis dirediones confti- 
tuunt cum HCK, utiie erit ad faciiiorem anaiyfim trigo- 
nometricum caiculum advocare . Itaque ex trigonometria 
notum eft finum totum elTe ad cofinum anguli O C N* ; ; 
N' C : C CL, Cive r : Cc . — tt ::h :q; ergo ^ — -L .C c. 
• r J Z Cc.(p.Cc.'n--\-Sc.(p.Sc.Tr " 
cj?— 77 : led Cc.cp — n =- 
h: ri: : C c . t: 1 1 -\-yy : r : :y:Sc :p yh: r: : c : S c tt: er- 
gO Cc.(p- Cf.TT-!-^, Sc.cp=z , SC.TT 
quibus in locum finuum, & cofinuum fubftitutis 
erit ^ - -V.!l!."±'-^I2 ^^^^ L"±n_, Qyod vero attinet ad 
*■ b. Jtt-i- yy ^ tt-\ yy 
angulus M'CH fit X, & anguius OCH— w — (|)fa- 
do w =: duobus re<a:is , Si fimiles prioribus proportiones in- 
ftituas, & ponas w (|) ~ ^ j erit r : C f . w — a — 9, five 
r:Cc. : : ^ :/ i ergo p -liSil-^^ZZ^ ; fed C c q — \ — 
r 
Cc .q .Cc .X+S r .q c .K C c . q . C c \ +% c . q . S c . \ 
^ ^ ; ergo p-a. —L- : at- 
qui C f . ^ - — C f . .^) rr: — ^;!^, C c . X = — , S c . q := 
y/tt^yy * 
con- 
