The direction cosines of Y-axis are:

0, 1, 0

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1, 0, 0

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1, 1, 1

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0, 0, 1

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Solution

The correct option is A
0, 1, 0

The Y-axis makes angles 90^o, 0^o and 90^o with the positive directions of X-axis, Y-axis and Z-axis, respectively, then cos 90^o = 0, cos 0^o = 1, cos 90^o = 0 are the directions cosines of the line.

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