Rain is falling vertically with a speed of $30\,ms^{-1}$ . A woman rides a bicycle with a speed of $12\,ms^{-1}$ in east to west direction. She should hold her umbrella
Rain is falling vertically with a speed of $30\,ms^{-1}$ . A woman rides a bicycle with a speed of $12\,ms^{-1}$ in east to west direction. She should hold her umbrella
- A
At an angle of $tan^{-1} (\frac {2}{5})$ with the vertical towards the east
- B
At an angle of $tan^{-1} (\frac {2}{5})$ with the vertical towards the west
- C
At an angle of $tan^{-1} (\frac {5}{2})$ with the vertical towards the east
- D
At an angle of $tan^{-1} (\frac {5}{2})$ with the vertical towards the west
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