engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Vector Algebra Magnitude and Directions of a Vector
The direction ratios of a line are (1, -3, 2). Its direction cosines will be:
1
(1, -3, 2)
2
(-1, 3, -2)
3
\(\displaystyle \rm\left({1\over\sqrt{14}},{-3\over\sqrt{14}},{2\over\sqrt{14}}\right)\)
4
\(\displaystyle\rm\left({-1\over\sqrt{14}},{3\over\sqrt{14}},{-2\over\sqrt{14}}\right)\)