colum $I$ | colum $II$ |
$(A)$ $|A+B|$ | $(p)$ $\frac{\sqrt{3}}{2} x$ |
$(B)$ $|A-B|$ | $(q)$ $x$ |
$(C)$ $A \cdot B$ | $(r)$ $\sqrt{3} x$ |
$(D)$ $|A \times B|$ | $(s)$ None |
The components of $\vec a = 2\hat i + 3\hat j$ along the direction of vector $\left( {\hat i + \hat j} \right)$ is
Let $\overrightarrow A = \hat iA\,\cos \theta + \hat jA\,\sin \theta $ be any vector. Another vector $\overrightarrow B $ which is normal to $\overrightarrow A$ is
Obtain the scalar product of unit vectors in Cartesian co-ordinate system.