UPSC NDA I 2015 Mathematics Solved Paper
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For the next two (2) items that follow:
The projections of a directed line segment on the coordinate axes are 12, 4, 3 respectively.
The projections of a directed line segment on the coordinate axes are 12, 4, 3 respectively.
[NDA I 2015]
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What are the direction cosines of the line segment?
[NDA I 2015]
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