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If a man is running on horizontal road, ...

If a man is running on horizontal road, raise appears to him coming at `30^(@)` from vertical. When he double his velocity rain appears to him coming at angle `theta` from vertical. Then `theta` is

A

`tan^(-1)(2)/sqrt(3)`

B

`tan^(-1)(1)/sqrt(3)`

C

`tan^(-1)(1)/sqrt(2)`

D

`tan^(-1)sqrt(3)/(2)`

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