My Year 13 class have just finished C3 and actually asked a very sensible set of questions:
- Which formulae are given to you?
- Which formulae must you learn?
- Which formulae can you work out from given rules?
- How do you prove simple rules?
In response to this, I’ve written a booklet for the Edexcel C3 paper: Trigonometry and Differentiation: What you are given and what you need to learn (docx) ( PDF Version)