A Description of The Admirable Table of Logarithms - Chap. 1 - p. 5

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A Description of the Admirable Table of Logarithms

(Page 5)

 

As for example. Let the 2 figures going afore bee here repeated, and let B bee moued alwayes, and euery where with equall, or the same swiftnesse wherewith b beganne to bee moued in the beginning, when it was in a. Then in the first moment let B proceed from A to C, and in the same time let b moue proportionally from a to c, the number defining or expressing AC shal be the Logarithme of the line, or sine cZ. Then in the second moment let B bee moued forward from C to D. And in the same moment or time let b be moued proportionally from c to d, the number defining AD, shall be the Logarithme of the sine dZ. So in the third moment let B go forward equally from D to E, and in the same moment let b be moued forward proportionally from d to e, the number expressing AE the Logarithme of the sine eZ. Also in the fourth moment, let B proceed to F, and b to f, the number AF shall be the Logarithme of the sine fz.

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