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The Description and Use of the Sector (1624)

Gunter, Edmund · leaf 64

An illustration from The Description and Use of the Sector, 1624, leaf 64
which is an arke ofSogr. Wherefore if the Radius of the circle giuen be equal!to the lateral! Radius,let the SeBor be opened neare vnto hislength, fo that both the lines of Sines may make but one di-ved: line: fo the diftance on the fines betweene 10 znd 10,fhallbe a chord ofiojthe diftance… … 10 OLO J^9 AO J-Q *f» Co j-o 4° jfe ^o lo A As the diameter F H vnto the radios A H , fo.the chordB E vnto the fine D E, or the chord G L vnto the fine A L:and then if the radius A H, be put for the diameter, whichis a chord of 180 gr, the fine D E or A L (hall feme for achord of 8ogr, and…

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