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    How would I make -i+2j into a unit vector?
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    A unit vector has a magnitude of one.

    Currently the magnitude of your vector is  \sqrt{1^2 +2^2} = \sqrt{5}

    Does that help?
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    (Original post by TheEd)
    How would I make -i+2j into a unit vector?
    find the magnitude say|V|
    then
    \hat{v}=\frac{1}{|v|}.(-i+2j)
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    (Original post by rbnphlp)
    find the magnitude say|V|
    then
    \hat{v}=\frac{1}{|v|}.(-i+2j)
    Cheers
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    (Original post by TheEd)
    Cheers
    your welcome
 
 
 
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