so this is just a zoomed in version of the same triangle this right over here is a right angle we know that the hypotenuse has length one it's opposite the right angle, we know that this angle right over here is 45 degrees and we know that this angle up here is 45 degrees so my next question to you is can we figure out the length of these sides? and the first thing, well i'll let you think about that for a second.