The projections of a line segment on the coordinate
\( \mathrm{P} \... VIDEO
The projections of a line segment on the coordinate
\( \mathrm{P} \) axes are \( 12,4,3 \) respectively.
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The length and direction cosines of the line segment are
(1) \( 13 ; \frac{12}{13}, \frac{4}{13}, \frac{3}{13} \)
(2) \( 19 ; \frac{12}{19}, \frac{4}{19}, \frac{3}{19} \)
(3) \( 11 ; \frac{12}{11}, \frac{14}{11}, \frac{3}{11} \)
(4) None of these
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