Rain is falling vertically 4ms−1. A man is moving due east with 3ms−1 . The direction in which he shall hold the umbrella with the vertical is
A
53∘ east of vertical
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B
37∘ east of vertical
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C
53∘ west of vertical
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D
37∘ west of vertical
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Solution
The correct option is B37∘ west of vertical r=rain,g= ground &m=man We have, →vrm=→vrg−→vmg Resultant →vrm makes an angle of θ=tan−134orθ=37o Man should hold his umbrella at θ=37o west of vertical