In the absence of wind, rain is falling vertically with a speed of 4m/s. After some time, wind starts
blowing with 3 m/s speed in North to South direction. Find the angle with the vertical that a man
standing on horizontal ground must hold his umbrella to keep himself dry.
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Answer:
yixixchx
Explanation:
jrzgjxgkxhkchkckhcykyxkyxykdyiydyykd7pf7pf
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