LIVRE III DE LA SYNTAXE MATHÉMATIQUE. i3i

BAT = 5o.55.io iBC = BAC = 33.57.22

TAC = 16.57.48 = S-— d — \ni' TC A = 17. 3.i2 = S-t-rf — s TAC + TCA = 54. o. o = 2S — \ (m'+m") = 28— ± m.

2S =109.17.31 = somme dcsangles inconnus i/» = 75.17.31 = demi-mouvement moyen

TAC + TCA = 34. o. o.

ATB == v' = 80. o. o BTC=V= 66° o' o" BAT = S — d = 5o.55.io BCT=S-f-<7= 58.22.22

p'j S — d =1 3o.55. 10 p"+S + ^=124.22. 22 ABT=i8o°— (V+S— <*) = 49. 4.5o. TBC= 55.37.38

FBC = 9o° —

|BFC

TBC

2e e'quation ==

: FBT