vectors-m

Question: A unit vector which is perpendicular to $\mathbf{i}+2\mathbf{j}-2\mathbf{k}$ and $-\mathbf{i}+2\mathbf{j}+2\mathbf{k}$ is



1) $\frac{1}{\sqrt{5}}\,(2\mathbf{i}-\mathbf{k})$
2) $\frac{1}{\sqrt{5}}\,(-2\mathbf{i}+\mathbf{k})$
3) $\frac{1}{\sqrt{5}}\,(2\mathbf{i}+\mathbf{j}+\mathbf{k})$
4) $\frac{1}{\sqrt{5}}\,(2\mathbf{i}+\mathbf{k})$
Solution: Explanation: No Explanation
Vector Product Cross Product of two vectors

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