vectors-m

Related Questions

• The position vectors of the points A, B and C are $\mathbf{i}+\mathbf{j},\,\,\mathbf{j}+\mathbf{k}$ and $\mathbf{k}+\mathbf{i}$ respectively. The vector area of the $\Delta ABC=\pm \,\frac{1}{2}\overrightarrow{\alpha }$ where $\overrightarrow{\alpha }=$

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• If a, b, c are mutually perpendicular unit vectors, then $|\mathbf{a}+\mathbf{b}+\mathbf{c}|\,\,=$

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• If a has magnitude 5 and points north-east and vector b has magnitude 5 and points north-west, then $|\,\,\mathbf{a}-\mathbf{b}\,\,|\,=$

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• The position vectors of A and B are $2\mathbf{i}-9\mathbf{j}-4\mathbf{k}$ and $6\mathbf{i}-3\mathbf{j}+8\mathbf{k}$ respectively, then the magnitude of $\overrightarrow{AB}$ is

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• If a, b, c are the position vectors of the vertices A, B, C of the triangle ABC, then the centroid of $\Delta \,ABC$ is

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