vectors-m

Question: A vector whose modulus is $\sqrt{51}$ and makes the same angle with $\mathbf{a}=\frac{\mathbf{i}-2\mathbf{j}+2\mathbf{k}}{3},\,\,\mathbf{b}=\frac{-\,4\mathbf{i}-3\mathbf{k}}{5}$ and $\mathbf{c}=\mathbf{j},$ will be



1) $5\mathbf{i}+5\mathbf{j}+\mathbf{k}$
2) $5\mathbf{i}+\mathbf{j}-5\mathbf{k}$
3) $5\mathbf{i}+\mathbf{j}+5\mathbf{k}$
4) $\pm \,(5\mathbf{i}-\mathbf{j}-5\mathbf{k})$
Solution: Explanation: No Explanation
Scalar Product Dot Product

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