vectors-m

Question: If $\mathbf{a}=\mathbf{i}+2\mathbf{j}-3\mathbf{k}$ and $\mathbf{b}=3\mathbf{i}-\mathbf{j}+2\mathbf{k},$ then the angle between the vectors $\mathbf{a}+\mathbf{b}$ and $\mathbf{a}-\mathbf{b}$ is



1) ${{30}^{o}}$
2) ${{60}^{o}}$
3) ${{90}^{o}}$
4) ${{0}^{o}}$
Solution: Explanation: No Explanation
Scalar Product Dot Product

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