A tunnel for a new highway is to be cut through a mountain that is h = 400 feet high. At point A, which is a distance of 150 feet from the base of the mountain, the angle of elevation is 420. On the other side of the mountain at point B, which is a distance of 160 feet from the base of the mountain, the angle of elevation is 43. Compute x, which is the length of the tunnel. To present an angle in degrees, type deg or use the CalcPad degree symbol. For example, sin(30deg). h A X X = feet