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A kayaker paddles across a river at a constant speed of 4 miles per hour and a bearing of N 60 degrees E. Which current vector results in the kayaker's actual speed being 5.9 miles per hour and the kayakers actual direction being N 70 degrees E.

  • math -

    If we let
    u = 4.0 @ N60E = (3.464,2.000)
    w = 5.9 @ N70E = (5.544,2.018)

    we want v such that

    u+v = w

    That should help.

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