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1. |
If a line makes an angle of 60°, 150°, 45° with the positive x, y, z-axis respectively, find its direction cosines. |
A. | –\(\frac{1}{2},-\frac{\sqrt{3}}{2},\frac{1}{\sqrt{2}}\) |
B. | –\(\frac{1}{2},-\frac{\sqrt{3}}{2},-\frac{1}{\sqrt{2}}\) |
C. | \(\frac{1}{2},-\frac{\sqrt{3}}{2},\frac{1}{\sqrt{2}}\) |
D. | \(\frac{1}{2},\frac{\sqrt{3}}{2},-\frac{1}{\sqrt{2}}\) |
Answer» D. | |