MathDB

11

Part of 1985 ITAMO

Problems(1)

Ellipse not parallel to x- or y-axis

Source:

1/1/2006
An ellipse has foci at (9,20)(9,20) and (49,55)(49,55) in the xyxy-plane and is tangent to the xx-axis. What is the length of its major axis?
conicsellipseanalytic geometrygeometrygeometric transformationreflection