Find the shortest distance from a point to a plane (generally, but you may use anexample first to help you discover the method)[br][br]To use the applet below, you can drag around the point [math]A[/math] to see what is happening with the shortest distance. From this, figure out how you would find this algebraically.

You can hide and unhide lines and planes to help you with questions 18 and 19. [br]You can also change the equations of each of the plane.