MCQOPTIONS
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MCQOPTIONS
| 1. |
If â is a unit vector in the xy-plane making an angle 30° with the positive x-axis, then what is â equal to? |
| A. | \(\rm \dfrac{\sqrt{3}\hat{i}+\hat{j}}{2}\) |
| B. | \(\rm \dfrac{\sqrt{3}\hat{i}-\hat{j}}{2}\) |
| C. | \(\rm \dfrac{\hat{i}+\sqrt{3}\hat{j}}{2}\) |
| D. | \(\rm \dfrac{\hat{i}-\sqrt{3}\hat{j}}{2}\) |
| Answer» B. \(\rm \dfrac{\sqrt{3}\hat{i}-\hat{j}}{2}\) | |