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Math (Geometry-Vectors)

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Let θ be the angle between two vectors v and u . If v*u =12, |v|=2, |u|=6√2 and 0∘<θ<180∘, what is the value of θ (in degrees)?

  • Math (Geometry-Vectors) - ,

    v•u = |v| |u| cosθ, so
    cosθ = 12/(2*6√2) = 1/√2
    clear now?

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