Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 172
e diameteis is parallel to a tangent of the liyper-bola, the other conjugate diameter coincides with the line joiningthe point of tangency and the centre. 125. Prom the condition for conjugate diameters, tan 6 tan cp = b we see that the products of the slopes of any pair of conju-gate diameters is… … Fig. 51. 158 PLANE ANALYTIC GEOMETRY. Let VR be any diameter; then PE, drawn through thecentre 0 parallel to the tangent at P (P^N) will be its eon-jugate diameter. Art. 124, Schol. The equation of the tangent at P (x, y) is • (1) XX yy _^ a? V^ hence, the equation of PR is ^^ yy __ 0 or V xy = ^r-…
Geometry, Analytic
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