An elementary treatise on analytical geometry : embracing plane co-ordinate geometry, and an introduction to geometry of three dimensions (1869)
Johnson, William Woolsey, 1841-1927 · Philadelphia : J.B. Lippincott · leaf 98
h the circle, which is in the single point(6,-1). Again, (0, 3) is a point without the circle, from which supposeit required to draw tangents to the circle. Making xx == 0 andyx = 3, we shall have the equation of the polar line, 3^ — 2^ + 3^ + 9 —7 = 0,or Qy — 2x + 2 = 0, or x==3y + 1. The… … x+2y=6, andy—2x=3, both of which passthrough the given point(0, 3). In the annexedfigure, the circle andlines of this problem are.constructed for the sake of illustration. Examples.—Find the equations of tangents to the circlex* + y1 -f 2x — 2y = 8, at the four points where it cuts the axes. Find…
Geometry, Analytic
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