a 25m ladder leans against a vertical wall. the foot of the ladder is 20m from the base of the wall. if the foot is moved 13m closer to the wall, how far does the top of the ladder move up the wall?

Question

radar · Answer

First let me say that is sure one long ladder.  You are dealing with two right triangles.  You have worked out several right triangles today so you should be up for this.|dw:1405218139010:dw|

radar · Answer

The 7 was obtained by subtracting 13 from 20 as described in your problem.

anonymous · Answer

thankyou