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[" rightarrowAMPLE 44A manona cliffobserves a boat at an angle of depression of 30"which is approaching "],[" the shoreto the point immediately beneath theobserver twer with a uniform speed.Six much is ater the "],[" angle of depression of the boat is found to be "60^(@)." Find the time taken by the boat to reach the shore "],[" soLUTION Let "OA" be the cliff and "P" be the initial position of the boat when the angle,"],[" depression is "30^(@)." After "6" minuter be the initial position of the boat when the angle,"]

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A man of a cliff observes a boat at an angle of depression of 30^(@) which is approaching the shore to the point immediately beneath the observer with a uniform speed.Six minutes later,the angle of depression of the boat is found to be 60^(0). Find the time taken by the boat to reach the shore.

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