Mathematics A-Level
Tangent and chord relationships
What Tangent and chord relationships means in Mathematics A-Level, as defined for AQA.
Definition of Tangent and chord relationships
Check what you remember
Read the wording for your board, then hide it and explain Tangent and chord relationships in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The perpendicular from the centre to a chord bisects the chord, and the radius at a point is perpendicular to the tangent there.
Topics that use Tangent and chord relationships
- C: Coordinate geometry in the (x, y) plane (AQA A-Level)
Related terms
- Completing the square
- curve sketching
- Eliminating the parameter
- Gradients and intercepts
- Mathematical modelling
- Parallel and perpendicular lines
- Parameter
- parametric equations
Using Tangent and chord relationships in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Mathematics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Mathematics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge