Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 137
Art. 63. — Supplementary Chords Chords from any point of ellipse or hyperbola-to the extrem-ities of the transverse axis are called supplementary. Let (x, y) be any point of the … The ellipse ^„ + j-^ equations of lines through (a;, ?/), (a, 0) and (.-», ?/),(— a, 0) are Fig. 112. •/ {X - a), x — a , y PliOPKRTlES OF THE CONIC SECTIONS 123 Calling the angles made l)y tlie supplementary eliords with the X-axis </> and <^, tan <^ tan 4> — V From the equa- x-).…
Geometry, Analytic
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