A circle C C\,C has centre (k,5)(k,5)(k,5) The point AAA (11,8)(11, 8)(11,8) lies on the circumference of the circle.
Find the equation of the tangent to the circle at A A\,A in terms of kkk.
130 exam-style questions on Eduqas GCSE Maths Perpendicular Lines and the equation of a tangent. Each one has a worked solution and a mark scheme showing where the marks go.