How to Find the Tangent on a Graph in Excel. The tangent is defined as the single point where a straight line meets a curved surface.

Higher; Circles and graphs The tangent. The equation of a circle can be found using the centre and radius. The discriminant can determine the nature of intersections between two circles or a ...

Learn about and revise quadratic, cubic, reciprocal and exponential graphs with this BBC Bitesize GCSE Maths Edquas study guide. ... (0, 0) to the point P is at right angles to the tangent, ...