Paper 2 structured question: Circle theorems I
Paper 2Core or Extended Mathematics2 marks
Diagram Description
Circle with diameter and tangent
A circle has diameter AB. Point C lies on the circle forming triangle ABC. A tangent touches the circle at point B. The radius OB is drawn from the centre O to point B. Angle ABC is unknown. Determine the size of angle ABC and justify your answer using circle properties.
- a[2]
Calculate Calculate the size of angle ABC.