Need some math help.

[Ivan]

I need some trigonometry help to be exact. I�m and no good at math at all. So this is killing me.

I�m given a problem to solve�

�A right isosceles triangle has a hypotenuse of 8 inches. What is the length of each leg? Round your answer to the nearest tenth of an inch.�

And it shows the right triangle with only the hypotenuse (8 inches.)

A page or two back from where the problem is, the text book I�m looking at is �teaching� me about a 45�-45�-90� right triangle. It says it has side lengths in the ratio 1:1: ***8730;2.

I�m I right in thinking that somehow I�m supposed to use that ratio to solve the problem? I don�t understand how though.