Practicing Success
Practicing Success
CUET Preparation Today
| Direction cosines of a line which makes equal angles with co-ordinate axis are |
\(\pm (1,1,1)\) \(\pm \left(\frac{1}{\sqrt{3}},\frac{1}{\sqrt{3}},\frac{1}{\sqrt{3}}\right)\) \(\pm \left(\frac{1}{3},\frac{1}{3},\frac{1}{3}\right)\) \(\pm \left(-\frac{1}{\sqrt{3}},-\frac{1}{\sqrt{3}},-\frac{1}{\sqrt{3}}\right)\) |
| \(\pm \left(\frac{1}{\sqrt{3}},\frac{1}{\sqrt{3}},\frac{1}{\sqrt{3}}\right)\) |
| \(\cos^{2}\alpha+\cos^{2}\alpha+\cos^{2}\alpha=1\) |
