Diagram NOT accurately drawn $$\(A, B, C\)$$ and $$\(D\)$$ are points on a circle, centre $$\(O\)$$. $$\(A O D\)$$ is a diameter of the circle. Angle $$\(C B D=28^{\circ}\)$$ Angle $$\(B D A=32^{\circ}\)$$ Find the size of angle $$\(B D C\)$$. Give a reason for each stage of your working. ○

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