Geometrical problem

[mheinloo]

An intercept with lenght l = 4 moves so that its one endpoint moves along y-axis and the other endpoint - on the x-axis. Find image for curve, drawn by point C that is on the crossection of the intercept and its crossection from the origin of coordinate axis.

This video has been deleted

[Werner_E]

Maybe like this (click on the picture to start the animation):

[PabloGarcia]

Werner,

That was very good mathematical animation!