Save guides, add subjects and pick up where you left off with your BBC account. As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\). We can use ...

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 ...

For example, the larger circle in Figure 1a is 14 times ... Accuracy in their study does not imply reading out precise values from data points in graphs. Communicating with graphs depends on ...