You are in a large gallery with a large rectangular painting hung high on a wall. Its lower edge is m feet above your eye level. Its upper edge is n feet above your eye level.

How far back should you stand to maximize your viewing angle, the angle from your eyes to the top and bottom of the painting.

(In reply to re: Interesting observation by Jer)

Except that if n or m = E, then the max viewing angle is 90 deg.  Still doesn't change the fact it's an interesting problem.

Posted by Kenny M on 2014-02-20 22:45:26