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March 25, 2017

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After flying for 15 min in a wind blowing 42 km/h at an angle of 30° south of east, an airplane pilot is over a town that is 50 km due north of the starting point. What is the speed of the airplane relative to the air?

This is a vector equation. I would do it graphically. vector from start to end, minus the wind vector, is equal to speed of airplane.

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