Mathematics 0580 · IGCSE · Circle theorems II

Circle theorems II — practice question

Points $A$, $B$ and $C$ lie on the circumference of a circle with centre $O$. $DA$ and $DC$ are tangents to the circle. Angle $ABC = 64^\circ$. NOT TO SCALE.
(main)[2]

Determine the value of $x$.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Applies angle sum $360-90-90-128$” …

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