MCQOPTIONS
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MCQOPTIONS
| 1. |
Find the direction cosines of the vector î + 2ĵ - k̂. |
| A. | \(\frac{1}{\sqrt 6}, \frac{2}{\sqrt 6}, \frac{-1}{\sqrt 6}\) |
| B. | \(\frac{1}{\sqrt 4}, \frac{2}{\sqrt 4}, \frac{-1}{\sqrt 4}\) |
| C. | \(\frac{-1}{\sqrt 4}, \frac{-2}{\sqrt 4}, \frac{1}{\sqrt 4}\) |
| D. | None of these. |
| Answer» B. \(\frac{1}{\sqrt 4}, \frac{2}{\sqrt 4}, \frac{-1}{\sqrt 4}\) | |