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# Title: Nicolai Mercatoris Holsati, è Soc. Reg. Institutionum Astronomicarum Libri Duo, De Motu Astrorum Communi & Proprio, Secundum Hypotheses Veterum & Recentiorum præcipuas; Deqve Hypotheseon ex observatis constructione (shelfmark Leibn. Marg. 63)
# Folio 200, page id 820424455:0222
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200
ASTRONOMIA.
Lib. I.
Ascentionum rectarum Solis ex Veneris. Deinde ubi Sol
occideric, capiarur rurtus eodem Ouadranre alcicudo alicujus
fxa, nec non alciendo pariter ac aximuctium V eneris; mox
Figura L. XVII. in Triangulo Z P + dantur eria lacera, I. PL
dus de 1d.
uEance, 2. P X complementum declinarionis FXX, 3. 2
complementum alticudinis observatae EXX. Invenitur L 
x
distancia fixxe a meridiano. Rurtus in Triangulo ZP F
dantE Y. PZ U ance, 2. PZ P arimurtum Veneris obter
vacum, 3. Z. P complemencum alcicudinis oblerratx Vener1S.
Invenitur igitur Z P 8, Cive distancia Veneris à Meridiano.
Ab angulo Z P P auter angulum Z. P +, rectac angulus FP
sive differenria ascensiorum rectarum Veneris _ Axx.
Duodsi ixitur Ascensio Recta Solis nota sic ad momentur
prioris
de
re