Loney, S. L. (Sidney Luxton), 1860-1939 · London, Macmillan and co. · leaf 154
Also the polar of P is xx^ + yVx — cC (2). By Art. 69, the lines (1) and (2) are perpendicular toone another. Hence OP is perpendicular to the polarof P. Also the length OP - ^x^+y}, 140 COORDINATE GEOMETRY, and the perpendicular, OiV, from 0 upon (2) Hence the product ON. OP — a^. The polar of any…
Coordinates · Geometry, Analytic
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