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Question

Two ships are 10 km apart on a line joining south to north. The one farther north is steaming west at 20 km h1. The other is steaming north at 20 km h1. What is their distance of closest approach ?


  1. 102km

  2. 52km

  3. 202km

  4. 10 km


Solution

The correct option is B

52km


dshortest=10cos45o

=52km

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