Lily is flying a cessna and is descending at a 13° angle towards a runway. if she can see a peak behind her at a 45° angle that is 400 meters away from the runway, how much further does she have to fly until she lands?

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal