vectors-m

Related Questions

• If $\theta$ be the angle between two vectors a and b, then $\mathbf{a}.\mathbf{b}$ $\ge 0$ if

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

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• 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

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• $a,\,b,\,c$ are three vectors, such that $a+b+c=0$, $|a|\,=1,\,|b|\,=2,\,|c|\,=3$, then $a.b+b.c+c.a$ is equal to

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• If O be the origin and the position vector of A be $4\,\mathbf{i}+5\,\mathbf{j},$ then a unit vector parallel to $\overrightarrow{OA}$ is

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