state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Mathematics Three Dimensional Geometry Direction ratios and Direction cosines
The direction ratio of (5, 6, -3) and (1, -6, 3) is
1
3, 7, -9
2
-2, -5, 8
3
-4, -12, 6
4
1, 1, 1
5
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