AAA, B B\,B and C C\,C are points on the circumference of a circle, centre OOO. DCE DCE\,DCE is a tangent to the circle.
AB=BCAB = BCAB=BC Angle BCE=65∘BCE = 65^\circBCE=65∘
Find the size of angle AOCAOCAOC.
You must show all your working.
59 exam-style questions on Eduqas GCSE Maths Circle Theorems. Each one has a worked solution and a mark scheme showing where the marks go.