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Countdown to Exams - Day 52 - Equation of a circle

Countdown to Exams - Day 52 - Equation of a circle

On day 52 of the countdown, we approach the more complex topic of the Equation of a circle. There are a few areas of prior knowledge required to tackle the whole topic completely. You will need to be confident in calculating missing sides using Pythagoras' theorem (to find the radius), calculating the gradient (to find the equation of the radius and then the tangent). Knowledge of perpendicular lines will be required as well as memorising the general rule for the equation of a circle (x2+y2=r2)

In the video below, Matt takes an in-depth look at the equation of a circle and talks about some of the likely problems you will face.

EzyMaths is the ultimate online GCSE Maths support service. Schools can enjoy a free 30-day trial to see for themselves how EzyMaths can support their teaching and help their students achieve better grades.

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Wednesday, 20 October 2021
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