Elements of geometry / from the Latin translation of Commandine. To which is added, a treatise of the nature of arithmetic of logarithms, likewise another of the elements of plain and spherical trigonometry; with a preface ... By Doctor John Keil ... The whole revised ... [with a] preface, by Samuel Cunn.

  • Euclid
Date:
1741
Catalogue details

Licence: Public Domain Mark

Credit: Elements of geometry / from the Latin translation of Commandine. To which is added, a treatise of the nature of arithmetic of logarithms, likewise another of the elements of plain and spherical trigonometry; with a preface ... By Doctor John Keil ... The whole revised ... [with a] preface, by Samuel Cunn. Source: Wellcome Collection.

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    lar Falls within or without, by the Affection of the given Angles* Here they feem to -have fpoken as tho* the Qucefitum was always determined, and never ambiguous ; for they have here determined whether the Perpendicular falls within or with¬ out, and thereby whether they are to take the Sum or the Difference of the Vertical Angles or Bafes for the fought Angle or Side, But notwithftanding thefe imaginary Deter¬ minations, I affirm, that the Qucefitum here, as in the two Cafes laft-mentioned, is fome- times ambiguous, and fometimes not; and that too, whether the Perpendicular falls with¬ in, or whether it falls without. See my Solu¬ tions of thefe two Cafes in Page 323. The Determination of the 3d Cafe of Ob¬ lique Plain Triangles, fee in Page 325. Sam. Cunn.