2021 SQA Nat 5 Mathematics Paper 2: nos. 15, 16 & 17

15. Express the area of a rectangle as a quadratic equation and solve it. 16. Simplify an expression involving cos and tan. 17. Express a vector in vector diagram in terms of two given vectors. Instructional exercise consisting of questions 15, 16 and 17 from the second paper of the 2021 SQA National 5 Mathematics resource paper. Where appropriate the alternative methods for solving the problem are also given. Set out in stages of 'try then check' the worked solution to each part of the question. Including indications of where each mark is allocated, and the requirements for that mark, according to the marking scheme.