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    In which direction would I have to travel (relative to the local air) in order to travel North (relative to a stationary observer) if I am flying in a 15kmh−1 wind coming from the West and can fly at 90kmh-1 relative to the air? Give your answer as a bearing (degrees clockwise from North) to 3 significant figures.

    Thank you!!

    Draw yourself a little triangle. The wind is 15km/h from the west, meaning it's blowing from west to east so the wind is going to the right. You want to go north, so make a vertical line on your triangle going up. Then think about what sort of direction you would need to go in to travel north with the wind how it is. You would have to travel north but a bit to the west as well wouldn't you.
    If you draw your triangle correctly you get a right angles triangle.
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