1.

If OA and OB are the tangent from the origin to the circle x^(2)+y^(2)+2gx+2fy+c=0 and C is the centre of the circle then the area of the quadrilateral OCAB is

Answer»

`sqrt(g^(2)+F^(2)-c)`
`sqrt(c(g^(2)+f^(2)-c))`
`(sqrt(g^(2)+f^(2)-c))/c`
`(sqrt(g^(2)+f^(2)-c))/2`

Answer :B


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