Sam sees a UFO hovering in the sky. He measures the angle of elevation of the UFO at 30 . He calls Julie, who is 15 miles closer to the UFO and asks her what her angle of elevation to the UFO is. She measures it to be 55 . The alien in the UFO sees the two kids and flies to a point directly over Julie's head (same altitude). This flight takes exactly one minute. How fast did the UFO move in miles per hour.