Triangle's side

Hey!

I have this problem: In triangle , is , is . Point is the midpoint of , and is also . What is the length of

The only way to solve the problem, that I can think of is using the cosine rule, but it is said that the problem could be solved without using trigonometry. Can anyone give me an idea how?

There's an easy solution using Stewart's theorem, but that's about all I see.

How do i work out the length of a triangle side?





exede satellite internet