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

Answer:

Knowledge points:

Solution: