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Finding 2D Perpendicular Vector - Nick - Oct 30, 2005 07:57 PM

How can I find a vector perpendicular to a vector I have in two dimensions? I know that the cross product does such thing given two vectors in three dimensions, but how can I find one simply perpendicular to another one in two dimensions?


Finding 2D Perpendicular Vector - OneSadCookie - Oct 30, 2005 08:05 PM

(-y, x) or (y, -x)


Finding 2D Perpendicular Vector - Nick - Oct 30, 2005 08:15 PM

I suppose I should've been more specific. If I have an arbitrary two dimensional vector, is there a way to find the vector perpendicular to it?


Finding 2D Perpendicular Vector - OneSadCookie - Oct 30, 2005 08:20 PM

(-y, x) or (y, -x)


Finding 2D Perpendicular Vector - Nick - Oct 30, 2005 08:24 PM

My mistake. I didn't fully realize you switched the y and x into the other's position. I guess I'm a little tired. Thanks.