The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\).

Back in May, a startup named Desmos launched at TechCrunch Disrupt NYC with the hope of addressing the fragmentation inherent to education by way of platform-agnostic software that allows users to ...

Where does this formula come from? One method of obtaining this equation is to integrate dxdy over the area of a circle. Well, you probably wouldn't want to do that in cartesian coordinates - but ...

Most famous equation: Einstein's E = mc2 ... Geometry is what tells us the area of a circle and how big the Great Pyramids of Giza are, for example. Algebra: In algebra, expressions describe ...

The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\).