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. The lines (a+b)x + (a-b) y-2ab=0, (a-...

. The lines `(a+b)x + (a-b) y-2ab=0, (a-b)x+(a+b)y-2ab = 0 and x+y=0` form an isosceles triangle whose vertical angle is

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The given lines are
`(a-b)x+(a-b)=2ab...(1)`
`(a-b)x+(a+b)y=2ab...(2)`
`x+y=0...(3)`
...
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RD SHARMA-THE STRAIGHT LINES -Solved Examples And Exercises
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