Projection of vector along coordinate axes; if direction cosine is given

The projection of a vector on the coordinate axes are 6,-3,2. Find its length and direction cosines.

The projections of a line on the co-ordinate axes are 4,6,12. The direction cosines of the line are

The projections of a vector on the three coordinate axis are 6,3,2 respectively.The direction cosines of the vector are (A)6,-3,2(B)(6)/(5),(-3)/(5),(2)/(5)(C)(6)/(7),(6)/(7),(2)/(7) (D) (-6)/(7),(-3)/(7),(2)/(7)

The projection of a vector on the three coordinate axes are 6, -3, 2 , respectively. The direction cosines of the vector are

The projections of a directed line segment on the coordinate axes are 12,4,3. The direction cosines of the line are

The projections of a directed line segment on the co-ordinate axes are 12,4,3. Then direction cosines of the line are

Direction cosines of of a vector