In the given figure, centre of two circles is O. Chord AB of bigger circle intersects the smaller circle in points P and Q. Show that AP=BQ
Draw perpendicular from O to line AB.
So, OE⊥PQ and OE⊥AB
We know that the perpendicular drawn from the centre of the circle to the chord bisects the chord.
So, PE=EQ .....(1)
and AE=EB .....(2)
(2) - (1)
AE−PE=EB−EQ
AP=BQ
Hence proved