Full text: Theoria motus corporum coelestium in sectionibus conicis solem ambientium (7. Band)

172 
L1BEK li, SECTIO I. 
minor est quam sin [AD — o-f- a): si magis placet, medium idoneum inter ambos 
valores adoptabitur. 
Calculo examinando sequentes quoque formulae inservire possunt, quarum 
tamen derivationem non ita difficilem brevitatis caussa supprimimus: 
,, a sin (l "—V) b sin {V—T) sin (8'—o) , sin (l'—l) 
U B B/ * I bA# 
7 B'sino' ?7cos6cos6" 
° BDinF' * sin {AJ) r — 6) sin e' 
ubi U exprimit quotientem sin( f'__ g) = (art. 138. aequ. 10.). 
141. 
Ex P 
—, atque aequatione III. art. praec. sequitur (w-j-w”)p 
hn ~ 7 ^i nc vero et ex Q — 2 1) r' 3 atque 
B' sin 5' 
elicitur 
Q sin z* 
ri+i. 
2 B' s sin 
b P +A 
Q sin z 4 
i h P+l 
2 B’ 3 sin 5' 5 
A P+a 
in [z — a), sive 
Statuendo itaque brevitatis caussa 
[14.] 
iK^smVsmtj — 
introducendoque angulum auxiliarem io talem ut fiat 
sino 
tangio = p_ f _ 1 
b coso 
F-\-a 
prodit aequatio (IV.) 
c Q sin oj sin 2 4 = sin (z — o) — a) 
ex qua incognitam z eruere oportebit. Ut angulus o> commodius computetur, 
formulam praecedentem pro tango) ita exhibere conveniet 
tang o) == 
(P-j- o) tango 
b 
\coso I \coso ;
	        
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