1.

If (1,-2,-2) and (0,2,1) are direction ratios of two lines, then direction cosines of a line perpendicular to both the lines are

Answer»

`((1)/(3),-(1)/(3),(2)/(3))`
`c((2)/(3),-(1)/(3),(2)/(3))`
`(-(2)/(3),(1)/(3),(2)/(3))`
`((2)/(sqrt(14)),-(1)/(sqrt(14)),(3)/(sqrt(14)))`

Answer :B


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