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April 6th, 2015, 02:31 AM   #1
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Finding a vector that is parallel to a plane

Hello,

If I am given a vector u=8i+6j+7k. and I need to find another vector w that is parallel to the XZ plane and also perpendicular to the given vector u.

I know that the XZ plane means that y=0. I also understand that for the vector to be perpendicular I need to find that the dot product should be 0. But I can't find out what to do exactly to find that vector.

Thanks for your help
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April 6th, 2015, 03:57 AM   #2
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Hello, noobinmath!

Quote:
Given vector
Find that is parallel to the -plane
and also perpendicular to the given vector

Your reasoning is correct.














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April 6th, 2015, 07:53 AM   #3
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Thanks! ! !
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