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[" If "38." A man on the top of a vertic...

[" If "38." A man on the top of a vertical observation tower observes a car moving at a uniform speed comin "],[" directly towards it.If it takes "12" minutes for the angle of depression to change from "30^(@)" to "45^(@)," hor "],[" long will the car take to reach the observation tower from this point? "],[" 39.The median of the following data is "525" .Find the values of "]

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A man on the top of a vertical observation tower observes a car moving at a uniform speed coming directly towards it. If it takes 12 minutes for the angle of depression to changed from 30^@ to 45^@ , how soon after this will the car reach the observation tower? Give your answer correct to the nearest second.

A man on the top of a vertical tower observes a car moving at a uniform speed coming directly towards it.If it takes 12 minutes for the angle of depression to change from 30^(0) to 45^(0) ,how soon after this will the car reach the tower? Give your answer to the nearest second.

A man on the top of a vertical tower observes a car moving at a uniform speed coming directly towards it. If it takes 12 minutes for the angle of depression to change from 30^0to45^0, how soon after this will the car reach the tower? Give your answer to the nearest second.

A person from the top of a hill observes a vehicle moving towards him at a uniform speed. It takes 10 minutes for the angle of depression to change from 45^(@) to 60^(@) . After this the time required by the vehicle to reach the bottom of the hill is:

A man on the top of a tower: standing on the seashore: finds that a boat coming towards him takes 10 min for the angle of depression to change from 30^(@) to 60^(@). Find the time taken by the boat to reach the shore from this position