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Math Help - vector question

  1. #1
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    vector question

    Hi, I am having difficulty figuring out this question

    Find all unit vectors parallel to the yz-plane that are perpendicular to the vector (3,-1,2)

    Thanx in advance
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by justin016 View Post
    Hi, I am having difficulty figuring out this question

    Find all unit vectors parallel to the yz-plane that are perpendicular to the vector (3,-1,2)

    Thanx in advance
    parallel to the yz-plane means the x-component is zero. thus, you seek a vector of the form (0,y,z)

    now, we want the dot product (0,y,z)*(3,-1,2) = 0

    can you solve for y and z?
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  3. #3
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    thanx alot.
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