Find the angle between the pair of lines joining the origine to the point of intersection x2+y2-2x-2Y-8=0 and x+y=0

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# Find the angle between the pair of lines joining the origine to the point of intersection x2+y2-2x-2Y-8=0 and x+y=0

Find the angle between the pair of lines joining the origine to the point of intersection x2+y2-2x-2Y-8=0 and x+y=0