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| 1. |
The direction cosines of a vector |r|,which is equally inclined to Ox OY and oz. If |r| given, the number of such vectors is given by }1) 2 2)4 3)6 4)8 |
| Answer» The direction cosines of a vector |r|,which is equally inclined to Ox OY and oz. If |r| given, the number of such vectors is given by }1) 2 2)4 3)6 4)8 | |