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

A

`13,lt12//13, 4//13, 3//13gt`

B

`19,lt12//19,4//19,3//19gt`

C

`11,lt12//11,14//11,3//11gt`

D

None of these

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A
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ML KHANNA-CO-ORDINATE GEOMETRY OF THREE DIMENSION-PROBLEM SET (1)
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