Originally Posted by

**caperjay** Here is the problem:

A wooden A frame is to be used to remove an air compressor from a truck bed. The top of the A frame must be 4 m from the ground, and the legs are to be 3 m apart at the bottom. What is the length of timbers necessary for the A frame legs?

So I can find the area of the triangle easy enough with bxh/2. But I can't figure out what the lengths are on each side since no angles are given. I know its an isosceles triangle so the two sides must be the same, but how can I calculate the lengths of the sides without angles? If someone could point me in the right direction it would be much appreciated.