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SORRY, i wrote this question wrong before ...
u, v, w are UNIT VECTORS. the angle between u and v is 25 degrees and the angle between vector v and w is 35 degrees.
find (v+w-3v). NOTE: vector u and w are on opposite sides of vector v.

  • Calculus -

    I think you have partially corrected your question.

    what about the v+w-3v ?
    Where does u come into the picture?
    v+w-3v would simply be w - 2v

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