Holding an umbrella
On a day rain was falling at 8 m/s making a 90-degree angle(meaning there was no air flow) with the surface.Ali was on a mountain.Ali saw the rain and started running at 5 m/s through a ramp which is at a 30-degree angle with the surface(This means that the mountain had a ramp).Ali has an umbrella with him.At what angle should he hold the umbrella to not to get wet? P.S-This is my first question so sorry if I messed up. :D
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