Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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1pretium 1 ℞ CB vel
17[Figure 17]
CD. Eſt ergo inuen­
ta terræ ſemidiameter
mill. Rom. ant. 4126,
paſſ. 238. poſito angu­
lo ad A gr.89.m.36.
ſec 33. præcisè.
XXXI
Prima me­
thodus in­
ueniendi tel
luris ſemi­
diametrum,
per Trigo­
nometriam
& Alge­
bram.
Quod ſi rem breuiùs
aſſequi velis, dato an­

gulo obſeruato in A gr.
89. m. 36. ſec. 33, ſumatur AC vt Radius, &
CD, vt ſinus dati anguli. Et aſſumptâ BC
1 ℞ fiat vt Radius 100000.00000. ad dati an­
guli ſinum 99997.67348, ita AC ped. 1 ℞
+ 480 ad CD ped. (99997.67348℞+4799888327040/100000.00000). Eſt
CD ipſi CB 1 ℞ æqualis, atque adeò vtrinque
demptâ fractione (99997.67348/100000.00000) ℞, remanet æqua­
tio inter (232652/100000.00000) ℞ & ped. (4799888327040/100000.00000). Qua­
rè factâ diuiſione habetur pretium 1 ℞ ped.
20631193 vt priùs.
XXXII
Idem aliter,
& breuiùs.
Gal. Methodus hæc plana eſt atque fa­
cilis cuiuis vel leuiter Analyticâ ſcientiâ aſ­
perſo: ſed aliquos fortaſſe deterreret, qui vel
ipſum. Algebræ nomen horrent, quamuis
Mathematici audire velint. Alios angulo­
rum obſeruatio, & linearum circulo adſcri­
ptarum vel inſcriptarum inueſtigatio ex Ca­

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