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An aeroplane at an altitude of \(1800 \ m\) finds that two boats are sailing towards it in the same direction. The angles of depression of the boats as observed from the aeroplane are \(60^{\circ}\) and \(30^{\circ}\) respectively. Find the distance between the two boats. (\(\sqrt{3} = 1.732\))
 
Answer:
 
The distance between the two boats is  .
 
(Note: Enter the number in the first box and the unit (short form) in the second box.)