MHT CET 2022 Mathematics question

MathematicsThree Dimensional GeometryMHT CET 2022

The direction cosines of the line, which is perpendicular to the lines with direction ratio -1, 2, 2 and 0, 2, 1 are respectively

Answer: (B)

Solution

The required direction is the cross product of and : . Its magnitude is , so the direction cosines are ;

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Question ID VK-094323