1.

If vec(P) = I + 2j + 6k, its direction cosines are

Answer»

`(1)/(41), (2)/(41) and (6)/(41)`
`(1)/(sqrt41), (2)/(sqrt41) and (6)/(sqrt41)`
`(3)/(sqrt41), (8)/(sqrt41), (7)/(sqrt41)`
1, 2 and 6

Answer :B


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