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A man is watching a boat speeding away ...

A man is watching a boat speeding away from the top of a tower. The boat makes an angle of depression of ` 60^(@)` with the man's eye when at a distance of 200 m from the tower . After 10 seconds, the angle of depression becomes `45^(@)` . What is the approximate speed of the boat ( in km/hr) , assuming that it is sailing in still water ? `(sqrt(3) = 1.732)`

Text Solution

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The correct Answer is:
`52.704km//hr`
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