UPSC NDA Math Model Paper 8

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Question : 120 of 120

Marks: +1, -0

If a line has the direction ratios (1, 2, 3) then its direction cosines are

(
1
√14
,
−2
√14
,
3
√14
)
(
1
√14
,
2
√14
,
3
√14
)
(
1
√13
,
2
√13
,
3
√13
)
None of the above

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