A man is going due east with a velocity of `3 kmh^(-1)`. Rain falls vertically downwards
Channel: Doubtnut
Date: 2020-08-30

A man is going due east with a velocity of `3 kmh^(-1)`. Rain falls vertically downwards at a speed of `10 km h^(-1)`. Calculate the angle at which he should hold his umbrella so as to protect himself from rain.