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An extreme skier, starting from rest, coasts down a mountain that makes an angle of 25.0-degrees with the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.200. She coasts for a distance of 10.4 m before coming to the edge of a cliff. Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 3.50 m below the edge. How fast is she going just before she lands?

So I didn't want to explain everything I tried, so I just scanned my paper ;). Here it is:

http://img129.exs.cx/img129/6093/physics_problem.gif

Can anyone see what I'm doing wrong? The correct answer is supposed to be 10.9 m/s...