this question is easy but i've forgotten how to answer it. a plane contains the points A(0,1,5),B(-3,2,4) and C(5,3,-4).find a normal vector to the plane. thank you.
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Originally Posted by kokolily this question is easy but i've forgotten how to answer it. a plane contains the points A(0,1,5),B(-3,2,4) and C(5,3,-4).find a normal vector to the plane. thank you. Way 1 find a standard form for the plane containing the above vectors, and then is normal to each and every once of them. Way 2: (this is a slight variation of the above): let , and now calculate the vector , which is normal to the plane generated by . Tonio
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