trigonometry
posted by ethan .
A tent pole is 85 feet high. A cable is attached to the ground 200 feet from the tower base. How long is the cable? What is the measure of the angle the cable makes to the ground?

trigonometry 
MathMate
The hypotenuse of a right triangle, using Pythagoras theorem, is
Length of cable
=√(200²+85²) feet
The angle would be
arc tangent(85/200)
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