Monday
April 21, 2014

Homework Help: Algebra

Posted by T on Thursday, December 2, 2010 at 7:52pm.

Terence wants to estimate the height of a tree. He places a mirror on level ground, as shown in the picture below, and stands so that he can see the top of the tree in the mirror. Since light bounces off the mirror at the same angle at which it strikes the mirror, angle 1 equals angle 2, and ─ABC is similar to ─CDE.

If Terrence's eyes are exactly 6 feet from the ground and the mirror is 20 feet from the tree and 1 foot from Terence, how tall is the tree?

please help!

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