Class 12MathematicsTHREE DIMENSIONAL GEOMETRYSystem of co-ordinates, Direction cosines and direction ratios, Projection
EasyIf the coordinates of a point $P$ with respect to the origin $O$ are $(3, 12, 4)$,then the direction cosines of $OP$ are ..........
- A$3, 12, 4$
- B$\frac{1}{4}, \frac{1}{3}, \frac{1}{2}$
- C$\frac{3}{\sqrt{13}}, \frac{1}{\sqrt{13}}, \frac{2}{\sqrt{13}}$
- D$\frac{3}{13}, \frac{12}{13}, \frac{4}{13}$
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