Posted by **Jason** on Tuesday, November 13, 2012 at 10:45pm.

An auditorium with a flat floor has a large screen on one wall. The lower edge of the screen is 3 feet above eye level and the upper edge is 10 feet above eye level. Assume you walk away fron the screen at a rate of 3 ft/s while looking at the screen. What is the rate of change of the viewing angle (theta) when you are 30 feet from the screen?

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