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If the straight line a x+c y=2b , where ...

If the straight line `a x+c y=2b ,` where `a , b , c >0,` makes a triangle of area 2 sq. units with the coordinate axes, then (a) `a , b , c` are in GP (b) a, -b, c are in GP (c) `a ,2b ,c` are in GP (d) `a ,-2b ,c` are in GP

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