Find a vector of magnitude 18 which is perpendicular to both the vectors 4i-j+3k and -2i+j-2k
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A vector perpendicular to the given two vectors will be in the direction of their cross product. The unit vector in the direction of their cross product will be( cross product can be found by using the method of determinant
−1
2
+2
2
+2
2
=−i+2j+2k/3
= 18/3(−i+2j+2k)=−6i+12j+12k
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