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The relation R={(a,b)/ Line a is perpendicular to line b in a plane} is |
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Answer» ong>Answer:
because line a is not PERPENDICULAR to line
because if line a is perpendicular to b, then line b is also perpendicular to line b
let line a is perpendicular to line b and line b is perpendicular to line c then line a is PARALLEL to line c |
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