Save guides, add subjects and pick up where you left off with your BBC account. More simply, the angle at the centre is double the angle at the circumference. Angle OGH (\(y\)) = angle OHG because ...

But he couldn’t, and when he revised the problem to a practically solvable one, this has become known as the classic Descartes Circle Theorem,” Mathews said in a release. The equation was ...