If BC is a diameter of a circle with centre O and OD is perpendicular

1.	If BC is a diameter of a circle with centre O and OD is perpendicular to the chord AB of a circle, show that CA=2 OD.
Answer» If $B C$ is a diameter of a circle with centre $O$ and $O D$ is perpendicular to the chord $A B$ of a circle, show that $C A = 2 O D$ .

If BC is a diameter of a circle with centre O and OD is perpendicular to the chord AB of a circle, show that CA=2 OD.

Answer»

If $B C$ is a diameter of a circle with centre $O$ and $O D$ is perpendicular to the chord $A B$ of a circle, show that $C A = 2 O D$ .