geometry
posted by tori .
a tree cast a shadow 25 feet long. the angle of elevation from the far end of the shadow to the top of the tree is 64 degrees,find the heighth of the tree

(height)/25 = tan64 = 2.05
height = 51.3 (ft.)
I assume that you are familiar with trigonometric functions such as tangent, although you have indicated geometry as the subject.