MCQOPTIONS
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MCQOPTIONS
| 1. |
If a vector \(\rm \vec a\) makes an equal angle with the coordinate axes and has magnitude 3, then the angle between \(\rm \vec a\) and each of the three coordinate axes is |
| A. | \(\cos^{-1}\left(\dfrac{1}{\sqrt{3}}\right)\) |
| B. | \(\sin^{-1}\left(\dfrac{1}{\sqrt{3}}\right)\) |
| C. | \(\dfrac{\pi}{6}\) |
| D. | \(\dfrac{\pi}{3}\) |
| Answer» B. \(\sin^{-1}\left(\dfrac{1}{\sqrt{3}}\right)\) | |