Points PPP, Q Q\,Q and R R\,R lie on the circumference of a circle with centre OOO. SRT SRT\,SRT is a tangent to the circle at point RRR.
PQ=QRPQ = QRPQ=QR Angle QRT=54∘QRT = 54^\circQRT=54∘
Find the size of angle PORPORPOR.
You must show all your working.
