vectors-m

Related Questions

• If $\mathbf{a}=2\mathbf{i}+4\mathbf{j}+2\mathbf{k}$ and $\mathbf{b}=8\mathbf{i}-3\mathbf{j}+\lambda \mathbf{k}$ and $\mathbf{a}\,\bot \,\mathbf{b},$ then value of $\lambda $ will be

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• ${{(\mathbf{r}\,.\,\mathbf{i})}^{2}}+{{(\mathbf{r}\,.\,\mathbf{j})}^{2}}+{{(\mathbf{r}\,.\,\mathbf{k})}^{2}}=$

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• If a and b are two vectors such that a . b = 0 and $\mathbf{a}\times \mathbf{b}=\mathbf{0},$ then

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• If $\mathbf{a}=2\mathbf{i}+2\mathbf{j}-\mathbf{k}$ and $|x\,\mathbf{a}|\,\,=1,$ then $x =$

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• If A, B, C, D are any four points in space, then $|\overrightarrow{AB}\times \overrightarrow{CD}+\overrightarrow{BC}\times \overrightarrow{AD}+\overrightarrow{CA}\times \overrightarrow{BD}|$ is equal to (where $\Delta$ denotes the area of $\Delta ABC$)

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