1.

A circle of radius 5 units passes through A(-5, 0) and B(5, 0). If P(5cosalpha, 5(sinalpha), Q(5cosbeta, 5sinbeta) are two points on this circle such that alpha-beta=pi/2, then the locus of the point of intersection of the line AP and BQ is

Answer»

`X^(2)+y^(2)-10x-25=0`
`x^(2)+y^(2)+10x-25=0`
`x^(2)+y^(2)+10y-25=0`
`x^(2)+y^(2)-10y-25=0`

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