A river flows toward the East at 1.5 m/s. Steve can swim 2.2 m/s in still water. If he wishes to cross the river so that his direction is northward, what direction relative to the water must he swim?

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  1. X = 1.5 m/s = Velocity of water.
    Y = 2.2 m/s = Velocity of the swimmer.

    Tan A = Y/X = 2.2/1.5 = 1.46667.
    A = 55.7o N. of E.

    Direction = 55.7o N. of W. = 34.3o W. of

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