 # Concise Selina Solutions for Class 9 Maths Chapter 25 - Complementary Angles

Selina Solutions are useful for students as it helps them in scoring high marks in the examination. The Selina Solutions given in this page contains detailed step-by-step explanations to all the problems that come under Chapter 25, Complementary Angles, of the Class 9 Selina Textbook. This chapter is a continuation of Chapter 23 and 24 of class 9 Selina book. This chapter deals with the concept of Complementary Angles.

These solutions are prepared by subject matter experts at BYJU’S, describing the complete method of solving problems. By understanding the concepts used in Selina Solutions for Class 9 Maths, students will be able to clear all their doubts related to “Complementary Angles” of triangles.

### Access Answers to Maths Selina Problems of Class 9 Chapter 25- Complementary Angles         ## Selina Solutions for Class 9 Maths Chapter 25- Complementary Angles

Chapter 25, Complementary Angles, is composed of 1 exercise and the solutions given here contain answers to all the questions present in this exercise. Let us have a look at some of the topics that are being discussed in this chapter.

25.1 Introduction

25.2 Concept of trigonometric ratios of complementary angles

25.3 Complementary angles for sine and cosine

## Selina Solutions for Class 9 Maths Chapter 25- Complementary Angles

In Chapters 23 and 24, students were taught about different trigonometric ratios and the evaluation of different trigonometric expressions. On the other hand, chapter 25 discusses and uses the concept of trigonometric ratios of complementary angles along with their applications. Read and learn the 25th chapter of Selina textbook to get up to date with the concepts related to Complementary Angles that are taught in the class. Learn the Selina Solutions for Class 9 effectively to score high in the examination.