Class 12MathematicsTHREE DIMENSIONAL GEOMETRYSystem of co-ordinates, Direction cosines and direction ratios, Projection
EasyIf the projections of a line segment on the coordinate axes are $3, 4,$ and $5$,then its length is:
- A$12$
- B$50$
- C$5\sqrt{2}$
- D$3\sqrt{2}$
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