Newcomb, Simon, 1835-1909 · New York, H. Holt and company · leaf 175
son the curve as at H, then thetangent ^i? is the polar; and ifthe pole is without the curve, asat Q, then it follows that thechord of contact HH is the,polar; hence we see that thetayigent and the chord of con-tact are respectively the polars of the point of contact and ofthe intersection of the… … 160 PLANE ANALYTIC GEOMETRY. or, when referred to a pair of conjugate diameters as axes, a + f^n - 1. (^7) The equation of the diameter conjugate to that whichpasses through the point (:c, y) is ^ + ff = 0, which shows that the diameter and the polar (27) are parallel;hence we have the following…
Geometry, Analytic
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