physics

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The magnitude of the scalar product of vectors A and B is three times as large as the magnitude of the vector product of the same two vectors. If they were placed tail-to-tail in space, A and B would form an angle of approximately how much?

  • physics -

    The magnitude of AxB is C=|A||B|sinθ
    while the magnitude of A.B is
    D=|A||B|cosθ
    So if
    D/C=3 => cotθ=3
    Solve for θ

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