A general geometry and calculus : including book I. of the general geometry, treating of loci in a plane; and an elementary course in the differential and integral calculus (1881)
Olney, Edward, 1827-1887 · New York : Sheldon and Co. · leaf 219
the equilateral hy-perbola the relation is aa = 1, or a ^= —, signifying that the angles are a complementary. 309, Cor. 5.—^ one of two supplementary chords to either axis isparallel to one of two drawn to the other axis the other two are parallel. . If a is the Dem.—In either Fig. 203 or 204 if PE… … posite signs in the ellipse. Thus P being the point from which the chords are drawn, PBX > 90°- and < 180° gives — a, PCX <C 90°, gives + a. Again PBX being an ^i*^- 205. angle between 180° and 270°, tan P BX = + a, but PCX being between 270° and 360°, its tangent is — a. In a similar…
Geometry, Analytic · Calculus
Internet Archive · Boston College Libraries · Public Domain Mark 1.0. Free to use for anything.
