How to find the lengths of the sides of a right, isosceles triangle give then angle measurements and one side?

So I have this right, isosceles triangle. The measure of the angles are 45, 45, and 90. The length of the hypotenuse is X. I need to find the lengths of the other two sides (In terms of X). I'm currently in Geometry, so I don't know much about Trig so a detailed explanation would be great. Thanks!