Calculating the diameter of a circle is one of the most fundamental concepts in geometry. The diameter is an essential component of numerous mathematical equations and real-life applications. In this ...

As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\). We can use perpendicular gradients to find the value of \(m\), then use the coordinates of P to find ...

In many instances, we encounter the need to determine the area of a particular shape. Circles are one of the commonly seen figures in geometry, and calculating their area is a vital skill to have.

A tangent to a circle at point P is a straight line that touches the circle at P. The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a ...