Loney, S. L. (Sidney Luxton), 1860-1939 · London, Macmillan and co. · leaf 153
Let QR be any chord drawn through P and let thetangents at Q and R meet in the point :Z^ whose coordinatesare (A, k). Hence QR is the chord of contact of tangents drawnfrom the point (h, k) and therefore, by Art. 161, itsequation is xh ■\- yk — o?. Since this line passes through the point (x-^, y^…
Coordinates · Geometry, Analytic
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