Learn how to write the equation of a circle. A circle is a closed shape such that all points are equidistance (equal distance ...

Learn how to write the equation of a circle given different pieces of information. When writing the equation of a circle you will be work from the general equation of a circle and plug in our given ...

Add your subjects to find the right study guides, track progress and keep everything in one place. Find the equation of a circle with radius 3 units and centre (0, 0). The radius, \(r = 3\) and \(r^2 ...

As a tangent is a straight line it is described by an equation in the form \(y - b = m(x - a)\). You need both a point and the gradient to find its equation. You are usually given the point - it's ...