PPP, Q Q\,Q and R R\,R are points on the circumference of a circle, centre OOO. PQ PQ\,PQ is a diameter of the circle.
Angle RPQ=7x∘RPQ = 7x^\circRPQ=7x∘ Angle PQR=3x∘PQR = 3x^\circPQR=3x∘
Find the value of xxx.
You must show all your working.