(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A movie screen at the front of a room is 9 feet above the ground and 16 feet tall. Determine the distance X you must sit away from the screen in order to maximize your viewing angle.

[ I tried to make the picture :P. I need to find X]

http://img50.imageshack.us/img50/2781/probwk6.png [Broken]

The little fish thing is i believe alpha...i don't know the Greek name for that.

2. Relevant equations

Well i figured that i need to do the tangent of both triangles and set them equal to each other, but i am confused if i need to take into account the second triangle for tan of theta.

I am comming up empty handed, and what i got was 25/tan[theta] but i don't think its right.

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# Homework Help: Need to determine distance maximizing angle theta.

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