$$\(A, B, C\)$$ and $$\(D\)$$ are points on the circle, centre $$\(O\)$$. $$\(E F\)$$ is a tangent to the circle at $$\(D\)$$. Angle $$\(A D E=42^{\circ}\)$$ and angle $$\(C O D=162^{\circ}\)$$. Find the following angles, giving reasons for each of your answers. Angle $$\(y\)$$ $$\(y=\)$$ ........................ because ................................................................................................ .................................................................................................................................................

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