(a)[1]
Determine angle $PRT$.
(b)[2]
Determine angle $QPR$.
Mathematics 0580 · IGCSE · Circle theorems I
Circle theorems I — practice question
Points $P$, $Q$, $R$ and $T$ lie on a circle. $AB$ touches the circle at $T$. $ngle ATP=50^\circ$, $ngle PTR=48^\circ$ and $PQ=QR$. The diagram is not drawn to scale.