The circle C C\,C has centre (3,1)(3, 1)(3,1) and passes through the point P(8,3)P(8, 3)P(8,3).
Find an equation for CCC.
Find an equation for the tangent to C C\,C at PPP, giving your answer in the form ax+by+c=0ax + by + c = 0ax+by+c=0, where aaa, b b\,b and c c\,c are integers.
6 exam-style questions on Edexcel A Level Old Maths Coordinate Geometry - Cirlces. Each one has a worked solution and a mark scheme showing where the marks go.