Full text: Apian, Petrus: Instrvmentvm Sinvvm, sev primi mobilis

Hæcigitur ſufficiãt de ingreſsibus tradita. Reſtat ut generali quadam methodo doce
am, quomodo uſus centum ſubſcriptos per quadrantem quo hunc conſequi ualeas, cõ
fiat autem id duabus regulis, quarum prima eſt.

11. REGVLA PRIMA.

Quotieſcun hoc in libro dicitur fieri oportere diuiſionem, hanc´ per ſinum inte-
grum ſiue perfectum, Toties putãdum eſt operationem eandem in qua drante exigi poſ
ſe per lateralem introitum.

12. REGVLA SECVNDA.

Quoties multiplicationẽ fieri per ſinum integrum ſiue perfectũ contingit, toties o-
perandum eſt arealiter in quadrante, ueluti per totum opus in paginarum marginibus
paſsim indica mus, nunc arealem, nunc lateralem ingreſſum hortantes.

13. TALIS AD VSVM QVADRANS ADORNARI
debet quantuſcun ſit.

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