An air traffic controller notices two signals from two planes on the radar monitor. One plane is at altitude 600 m and in a 15.9 km horizontal (ground) distance to the tower in a direction 17° south of west. The second plane is at altitude 700 m and its horizontal distance is 15.3 km and 21° south of west. In kilometers, what is the distance between these planes? Submit Answer Tries 0/20

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