1 Comment Posted on 25/10/2013 Maths, Year 11 Year 11 School closure work. Your task is to complete all the past paper questions in your Trigonometry revision booklet. Use your book to help or these revision videos Trigonometry playlist remember to 1. label the dagram. 2. State the formula you need to use 3. Substitute the numbers into the formula 4. The easy bit solve it! Read the picture on the right.