To a man walking due east at the rate of 2 km/hr with respect rain appears to fall vertically. When he increases his speed to 4km/hr in the same direction of his motion
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To a man walking due east at the rate of 2 km/hr with respect rain appears to fall vertically. When he increases his speed to 4km/hr in the same direction of his motion, rain appears to meet him at an angle of 45 degree with horizontal, Find the speed of rain of the rain relative [...]