Update ANS: Two circles with centres X and Y intersect each other at A and B. The point A is joined with S, the midpoint of XY. The perpendicular to SA through A intersects the circles at P and Q. Prove PA= AQ?

27 Mar 2021

Two circles with centres X and Y intersect each other at A and B. The point A is joined with S, the midpoint of XY. The perpendicular to SA through A intersects the circles at P and Q. Prove PA= AQ?

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