r^2}\), where \((a,b)\) represents the centre of the circle, and \(r\) is the radius. This equation is the same as the general equation of a circle, it's just written in a different form.

Find the equation of the tangent to the circle \(x^2 + y^2 = 25 \) at the point (3, -4). The tangent will have an equation in the form \(y = mx + c\) so to find the equation you need to find the ...