1.

The direction ratios of the line perpendicular to the lines with direction ratios < 1, -2, -2 > and < 0, 2, 1 > are

A. < 2, -1, 2 >
B. < -2, 1, 2 >
C. < 2, 1, -2 >
D. < -2, -1, -2 >
Answer» B. < -2, 1, 2 >


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