A hexagon is inscribed in a circle of radius

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

Problem

A hexagon is inscribed in a circle of radius rr. Two of its sides have length 11, two have length 22, and the last two have length 33. Prove that rr is a root of the equation 2r3−7r−3=02r^3-7r-3=0.

Related theory

Browse the problem library