Question

A fence 4 feet tall runs parallel to a tall building at a distance of 5 feet from the building.
What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
Two approaches to the same problem, one using trig, the other using only algebra.
Just change the numbers.

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http://www.jiskha.com/display.cgi?id=1245646756

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