The circle C C\,C has centre (1,5)(1, 5)(1,5), and the point A(−4,3)A(-4, 3)A(−4,3) lies on CCC.
Find an equation for the tangent to C C\,C at AAA, 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.
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.