Chapter 1 of Class 12 CBSE Math is part of the unit 1 Relations and Functions, which has two chapters: Relation and Inverse Trigonometric Functions. Both of these chapters are worth a total of 8 points on the final board exam, which has a total of 80 marks. This means that they make up 1/10th of the questions on the exam. Students can look at the class 12 NCERT textbook to see what kinds of questions are asked from these two chapters, and the RS Aggrawal Solutions for Class 12 Mathematics can be used to practise numerical problems.