Question

find x and y

Answer 1

from that diagram, all you can deduce is
\[x^2 + 7^2 = (y+13)^2\]

Do you know any more of the angles?

Answer 2

No thats is all

Answer 3

From your picture, it looks a bit like that's a right angle, but it might not be.

You don't have enough information to solve for x and y at the moment.