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If form a isosceles triangle, then
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Correct option is A
The given lines are x+y=0 …… (1) x−y=0 …… (2)And lx+2y=1 …… (3)Equations (1) and (2) represents two perpendicular lines, and the third line makes an angle with the line (1) and line (2) Hence, tan45°=m1−m21+m1m2=−l2−11−l2=l+22−l It implies that l=0Talk to our academic expert!
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If the pair of lines are perpendicular to each other then
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