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Arithmetica Logarithimica (1624)

Briggs, Henry · leaf 63

An illustration from Arithmetica Logarithimica, 1624, leaf 63
23 13010299957ill3357921019 fumma omnium. CE. diameter 21 j. videpaginam 37.de compl.arith. Si angulum quemlibet fcire velimus. auferatur latus eidem oppoutume femiperimetro: reliquum erit teg-mentum alterutrius cruris inter an-gulum eundem & punctum in quoperipheriacirculi inferipti tangit… … proport \ 2C 9 compl.arith. G F 3 .Radius 10000000000. v Tangens C7/?F 3333333333. Logarithm. 90 4575749 047712125I 000000© 001195 2 28 7874 iS:Z6:o6 Erit igitur anguius GBF 18:26:06. & totus angulus GBA 36:52:12.Eodem modo inveniri poterunt reliqui anguli ad C & A. Logarithm.CG ii…

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