MathDB

A point

C

lies on a line segment

AB

between

A

and

B

and circles are drawn having

AC

and

CB

as diameters. A common tangent to both circles touches the circle with

AC

as diameter at

P \ne C

and the circle with

CB

as diameter at

Q \ne C

. Prove that

AP, BQ

and the common tangent to both circles at

C

all meet at a single point which lies on the circumference of the circle with

AB

as diameter.

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