The circle C C\,C has the equation x2+y2−4x−6y=48x^2 + y^2 - 4x - 6y = 48x2+y2−4x−6y=48
Find the coordinates of the centre of CCC.
Find equation of the tangent to the circle at the point (7,9)(7, 9)(7,9).
60 exam-style questions on AQA A Level Maths 1.6.2 Coordinate geometry of the circle. Each one has a worked solution and a mark scheme showing where the marks go.