vectors-m

Related Questions

• A force of magnitude 6 acts along the vector $(9,\,6,\,-2)$ and passes through a point A (4, – 1, –7). The moment of the force about the point O (1, – 3, 2) is

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• If $\theta$ be the angle between the unit vectors a and b, then $\cos \frac{\theta }{2}=$

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• If $(x,\,\,y,\,\,z)\ne (0,\,\,0,\,\,0)$ and $(\mathbf{i}+\mathbf{j}+3\,\mathbf{k})\,x+(3\,\mathbf{i}-3\mathbf{j}+\mathbf{k})\,y$ $+(-4\mathbf{i}+5\mathbf{j})\,z=\lambda \,(x\mathbf{i}+y\mathbf{j}+z\mathbf{k}),$ then the value of $\lambda$ will be

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• The vector $\frac{1}{3}\,(2\mathbf{i}-2\mathbf{j}+\mathbf{k})$ is

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• The sum of the three vectors determined by the medians of a triangle directed from the vertices is

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