A circle C C\,C has centre (2,5)(2,5)(2,5) The point AAA (11,8)(11, 8)(11,8) lies on the circumference of the circle.
Verify that the equation of the tangent to the circle at A A\,A is y=−3x+41y = -3x + 41y=−3x+41.
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.