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    I have a maths question, can't do it for some reason:Given a vector a = 3i + 4j - k, derive the unit vector parallel to a.
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    you need to divide a by |a|
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    divide all values of a by |a| which is √26 ? So: 3/√26, 4/√26, -1/√26, is that correct?
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    (Original post by thesolamnus)
    divide all values of a by |a| which is √26 ? So: 3/√26, 4/√26, -1/√26, is that correct?
    Yes, those are the correct values, though but it into the same format as the question.
 
 
 
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