A man is walking of the rate of 5 km/h towards the foot of a tower 16 m high. The roots at which he is approaching the top when he is 12 m from the tower is
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answer is 0003.00.
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Detailed Solution
From fig (16)2+x2=y2∴2xdxdt=2ydydt At x=12∴ 12×5=20dydt or dydt=3km/h