Question: After flying for 15 min in a wind blowing 42 km/h at an angle of 20o south of east, an airplane pilot is over a

After flying for 15 min in a wind blowing 42 km/h at an angle of 20o south of east, an airplane pilot is over a town that is 55 km due north of the starting point. What is the speed of the airplane relative to the air?

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