JEE Math Practice Question
The projections of a vector on the three coordinate axis are $$6,-3,2$$ respectively. The direction cosines of the vector are :
- A.$${6 \over 5},{{ - 3} \over 5},{2 \over 5}$$
- B.$${6 \over 7 },{{ - 3} \over 7},{2 \over 7}$$
- C.$${- 6 \over 7 },{{ - 3} \over 7},{2 \over 7}$$
- D.$$6, -3, 2$$
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