vectors-m

Related Questions

• The vectors $\overrightarrow{AB}=3\mathbf{i}+4\mathbf{k},$ and $\overrightarrow{AC}=5\mathbf{i}-2\mathbf{j}+4\mathbf{k}$ are the sides of a triangle ABC. The length of the median through A 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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• The vectors $\mathbf{i}+2\mathbf{j}+3\mathbf{k},$ $\lambda \mathbf{i}+4\mathbf{j}+7\mathbf{k},$ $-3\mathbf{i}-2\mathbf{j}-5\mathbf{k}$ are collinear, if $\lambda$ equals

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• If $\mathbf{a}=\mathbf{i}+2\mathbf{j}+3\mathbf{k},\,\,\,\mathbf{b}=-\mathbf{i}+2\mathbf{j}+\mathbf{k}$ and $\mathbf{c}=3\mathbf{i}+\mathbf{j},$ then the unit vector along its resultant is

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• The magnitudes of mutually perpendicular forces a, b and c are 2, 10 and 11 respectively. Then the magnitude of its resultant is

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