Determine a vector perpendicular to both y-axis and the vector with tail at A( 1,1,0) and head at B( 3,9,2) .
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Originally Posted by fastman390 Determine a vector perpendicular to both y-axis and the vector with tail at A( 1,1,0) and head at B( 3,9,2) . < so the y axis is <0,1,0> and B-A=<2,8,2> let <x,y,z> be an aribitary vecotor then since we want them to be perpendicular their dot products must be zero so now Now we get so is perpendicualr to both. I hope this helps
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