SOLUTION: How to find a vector perpendicular to the plane containing the points A:(2,3,1), B:(2,6,2) and C:(-1,3,4). Thank you.

Algebra ->  Matrices-and-determiminant -> SOLUTION: How to find a vector perpendicular to the plane containing the points A:(2,3,1), B:(2,6,2) and C:(-1,3,4). Thank you.       Log On


   

Question 1115727: How to find a vector perpendicular to the plane containing the points A:(2,3,1), B:(2,6,2) and C:(-1,3,4).
Thank you.
Answer by Alan3354(69443) About Me  (Show Source):
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How to find a vector perpendicular to the plane containing the points A:(2,3,1), B:(2,6,2) and C:(-1,3,4).
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Use a pair of vectors, eg AB & AC
AB = (0,3,1) and AC = (-3,0,3)
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The cross product is perpendicular to the plane.
Both the cross products.