The lines with equations y=34x\displaystyle y = \frac{3}{4}xy=43x and y=−34x\displaystyle y = -\frac{3}{4}xy=−43x are tangents to a circle at (4,3)(4, 3)(4,3) and (4,−3)(4, -3)(4,−3) respectively.
Find an equation for the circle.
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.