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if a straight line c(-*8

^{1/2},-*8

^{1/2}) making an angle 135 dge with x-axis,cuts the circle x=5cosm y=5sinm in points A and B ,find length of segment AB .

in the equation of line by solving i got y=-x

and tried to solve and ended up getting length of AB as 0 but the solution has done a different way and got different answer//probably i am using some wrong concepts..plz help