Mathematics GCSE
perpendicular radius
What perpendicular radius means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of perpendicular radius
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Reference: Pearson Edexcel
The radius drawn to the point of contact is at right angles to the tangent there, so the tangent's gradient is the negative reciprocal of the radius gradient.
Topics that use perpendicular radius
- Algebra - Graphs (Pearson Edexcel GCSE)
Related terms
- area under a graph
- Asymptote
- Asymptotes
- axis of symmetry
- completing the square
- coordinate plane
- Discriminant
- Displacement
Using perpendicular radius in the exam
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