The following diagram shows a circle with centre O

MATHEMATICS · Subjective · A Level · Mathematics · Trigonometry · Trigonometry

Problem

The following diagram shows a circle with centre O. Points A, B and C lie on the circle. (Diagram not to scale.) The area of triangle AOB is

26\text{ cm}^2

and

\angle AOB = 2.51

radians. Find the length of arc ACB.