Given two angles of elevation and no sides find the height of a mountain? Trigonometry?

M

Michelle G

New member
The faces on Mount Rushmore are 60 feet tall. A visitor sees the top of George Washingtons head at a 48 degree angle of elevation and his chin at a 44.76 degree angle of elevation. Find the height of Mount Rushmore.

My pre calc book asks a bunch of questions such as this, but there is no explanantion on how to SOLVE them. Faulty Glencoe D:< Please help?
 
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