Learn how to write the equation of a circle given different pieces of information. When writing the equation of a circle you ...

Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric identities, ...

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 ...