1.

If A and B are conjugate points w.r.t to circle x^(2)+y^(2)=r^(2) then OA^(2)+OB^(2)=

Answer»

`AB^(2)-r^(2)`
`AB^(2)+r^(2)`
`AB^(2)+2r^(2)`
`AB^(2)-2r^(2)`

ANSWER :C


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