Plane and solid analytic geometry; an elementary textbook (1905)
Ashton, Charles H. (Charles Hamilton), 1866- · New York, C. Scribner's Sons · leaf 103
line - + ^ = 1 is tangent to the circle x^ + if = ?-.a b 4. Determine the value of k if the line 3 a; — 4 ?/= A: istangent to the circle x- + ?/- — 8 ;v + 12 ?/ — 44 = 0. 5. Find the condition which mustj^e satisfied if the lineAx -h By -f- 0 = 0 is tangent to the circle x--\-y-\- Dx -h Ey + F = 0.… … equation of tlic chord P^P^, tlirougli the two points ofcontact of these tangents. The equations of the tangents P^P^ ^^^^ ^3^1 ^^^^ and x^x-i-y0 = r\ Both these equationsmust be satisfied by 0^1. yi)Hence x^x-^ + i/,^7/^ = r^, and x^x^ + y^y^ = r^. But these are just theconditions which must…
Geometry, Analytic
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