P.o.t.W. #7 Solution
site user Dan Buckley contributed an efficient solution and simpler than Solution #1 - see Dan's Solution #2read Dan's comment at the bottom of this page Solution #1 (below) Let B and T be the bottom and top of the screen, respectively. Let V be the position of the viewer’s eye; and, let P be the point that is horizontally across from V such that VP is perpendicular to the screen (see figure at right). Then it can be...