This video is about the cosine rule for GCSE maths, and is aimed at around grade 7+. It's fairly tough and please do - stop the video - work through the question - compare your solution I hope the video helps and please leave a comment - thanks! Download a copy of the question here: QT Tough Questions - Proving Cosine Here's a copy of the written answer: QT … [Read more...]

These videos look at product rule for counting type questions, and are aimed at around grade 7 GCSE maths. These questions are usually fairly straightforward, although you will need to read through thoroughly. Download a copy of the questions here: QT Product rule for counting Here's a copy of the written answers: QT Product rule for counting ANSWERS These types … [Read more...]

These videos look at sine rule type questions, and are aimed at around grade 7 GCSE maths. These questions can be a little challenging, and you will need to take a little time to practice - particularly as some of the problems also involve Pythagoras or SohCahToa. The first video is all about the theory, the second video aims to give you some experience with the sine rule as … [Read more...]

This video is an example of answering a question using the sine rule: "Joe has a field in the form of a triangle ABC, with dimensions as shown. (a) Calculate length AB (b) Calculate the area of the field" The question is aimed at around grade 7 and the topic appears in all the main examination boards, including Edexcel, AQA and OCR. The sine rule is fairly popular and, … [Read more...]

  This video gives an explanation of how to work with difficult GCSE maths iteration questions, sometimes called 'iterative formula.' The questions can be extremely wordy ... but should be absolutely fine once you get the general idea. There's also some additional examples at the end of the page. The question is aimed at GCSE maths grade 7+ calculator paper. (a) … [Read more...]