A circle C C\,C has one of the equations (x−3)2+(y−4)2=25(x - 3)^2 + (y - 4)^2 = 25(x−3)2+(y−4)2=25 or (x+3)2+(y−4)2=25(x + 3)^2 + (y - 4)^2 = 25(x+3)2+(y−4)2=25.
Sketch the two possible positions of CCC.
Find the radius of C C\,C and the coordinates of the points where the two possible circles intersect.
292 exam-style questions on Edexcel A Level Maths Circles, covering 6.1 Midpoints and Perpendicular Bisectors, 6.2 Equation of a Circle, 6.3 Intersections of Straight Lines and Circles, 6.4 Use Tangent and Chord Properties, and 6.5 Circles and Triangles. Each one has a worked solution and a mark scheme showing where the marks go.