Find a circle's equation given two points and a right angle
Resources on this page:
Video going through an SBD question | Key points | SBD with worked solution
Pure 1 Ex 6F Q8 - the answer is at the bottom of this page
Remember: productive practice is perfect preparation
- Once you have seen and understood how to do the question then do it yourself
- If you used help then after a few days retry the question without help
Key Points
You need to be able to:
- Use Pythagoras's theorem to solve circle problems
- Form and solve a quadratic to find an unknown
- Recognise that a right-angled triangle on a circle must include a diameter
- Derive the equation of a circle from a diameter
Answer to the textbook question at the top of this page