This video is all about using the cosine rule, and is aimed at around grade 6 GCSE Maths. It’s quite likely to be a non calculator question. You need to find x after being given three sides of a triangle (x+2), (root73) and (2x-3); as well as one angle of 60 degrees. Top Tips! Always write the formula Work methodically down the page Label angles … [Read more...]

   This video is all about how to rearrange the subject of a formula, and is aimed at around grade 4 GCSE maths. Make t the subject of the formula v = u + 5t How to rearrange the subject of a formula questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. … [Read more...]

This video is all about how to change the subject of a formula, and is aimed at around grade 5 GCSE maths. Make h the subject of the formula M = √((2h + 1)/3) These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. Please do stop the video, try the … [Read more...]

  This video is all about changing the subject of a formula, and is aimed at around grade 6 GCSE maths. The difficulty with this type of question is the requirement to factorise: Make y the subject of the formula 3(y + 2) = a(5 - 2y) These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once … [Read more...]

 This video is all about how to solve quadratic inequalities and is aimed at around grade 7+ GCSE Maths. Work out the integer values that satisfy 1) 2x² - 10x + 10 < 0 2) x² - 7x + 11 < 0 How to solve quadratic inequalities questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic … [Read more...]