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A bird was flying in a line parallel to the ground from north to south at a height of 2000 metres. Tom, standing in the middle of the field, first he observed the bird in the north at an angle of `30^@` . After 3 min, he again observed in the south at an angle of `45^@`. find the speed of the bird in km per hour. `(sqrt(3) = 1.73)`

Text Solution

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The correct Answer is:
109.2 km/hr.
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