NCERT Solutions for Class 10 Maths Chapter 8 Ex 8.4 are created by askIITians experts as a study guide for the students. Introduction to Trigonometry is an important chapter from the board exam point of view as well as for higher classes and competitive exams. Therefore, it is essential that you study each of its NCERT exercises thoroughly. Our NCERT Solutions will help you understand the concepts introduced in Ex 8.4 and make it easier for you to resolve your doubts at any time you want.
The fourth exercise of NCERT Class 10 Maths Chapter 8 Introduction to Trigonometry is based on trigonometric identities. This is an important exercise from the perspective of the Class 10 CBSE board examination. There are 5 questions in this exercise and some questions have different sub-parts so that you can practise the trigonometric identities thoroughly. Let us see what is included in this exercise and how you can download its solutions for free from the askIITians website.
When we calculate the trigonometric ratios for some specific angles and establish some identities involving these ratios, those identities are called trigonometric identities. Three important trigonometric identities, that will help you solve Ex 8.4 are:
sin2 A + cos2 A = 1
sec2 A – tan2 A = 1 for 0° ≤ A < 90°
cosec2 A = 1 + cot2 A for 0° < A ≤ 90º
Types of questions included in NCERT Class 10 Maths Chapter 8 Ex 8.4:
Ex 8.4 Q1: In this question, you have to express the trigonometric ratios sin A, sec A and tan A in terms of cot A.
Ex 8.4 Q2: In this question, you have to write all the other trigonometric ratios of ∠A in terms of sec A.
Ex 8.4 Q3: in this question, you are given two trigonometric ratios and you have to evaluate them using the trigonometric identities.
Ex 8.4 Q4: This is a multiple-choice question where you are given four different options for every subpart. You have to choose the correct answer as well as justify your choice.
Ex 8.4 Q5: In this question, you are given different trigonometric identities and you have to prove them. This question includes 10 subparts and is very important from the exam perspective. You must practice this question very carefully.
Tips on how to solve exercise questions for NCERT Class 10 Maths Chapter 8 Ex 8.4:
You must remember the trigonometric identities as they will help you solve the questions of this exercise.
Make sure you copy the trigonometric equations given in the question carefully and do not make mistakes in copying the positive and negative signs.
Always write the identity that you are using to solve the problem as it will help the examiner understand how you solved the question and reduce the chances of losing any marks in the exam.
Practise all the NCERT questions of Ex 8.4 and clarify all your doubts using our NCERT Solutions.
The fourth exercise of NCERT Class 10 Maths Chapter 8 is all about conceptual understanding. Some of the questions in this exercise are twisted which makes it difficult for the students to master the concepts. All the previous concepts explained in this chapter such as trigonometric ratios, trigonometric ratios of specific angles, trigonometric ratios of complementary angles, and trigonometric identities must be clear to you if you want to master this exercise.
Why you must download NCERT Solutions for Class 10 Maths Chapter 8 Ex 8.4 from askIITians:
All the exercise solutions are prepared by askIITians Maths experts who have years of teaching experience to Class 10 students.
The NCERT Solutions are based on the latest exam pattern and the CBSE Class 10 Maths syllabus.
You can download the NCERT Solutions for Class 10 Maths Chapter 8 Exercise 8.4 for free in pdf format and study at your own pace.
Learn independently without any problem with our self-explanatory NCERT Solutions for Trigonometry Exercise 8.4.
Download NCERT Solutions for all exercises of Class 10 Maths Chapter 8:
NCERT Chapter 8 Class 10 Maths Ex 8.1 Solutions - 11 Questions
NCERT Chapter 8 Class 10 Maths Ex 8.2 Solutions - 4 Questions
NCERT Chapter 8 Class 10 Maths Ex 8.3 Solutions - 7 Questions
NCERT Chapter 8 Class 10 Maths Ex 8.4 Solutions - 5 Questions
1. How many examples are there for NCERT Class 10 Maths Chapter 8 Ex 8.4?
There are 4 examples and 5 unsolved questions in Exercise 8.4 of Class 10 Maths Chapter 8. You must practice all these questions thoroughly if you want to master this exercise.
2. How to study NCERT Class 10 Maths Chapter 8 Introduction to Trigonometry?
askIITians provides a plethora of study resources for Class 8 Maths Chapter 8 Introduction to Trigonometry such as revision notes, previous year questions, extra questions, daily practice sheets, mind maps and flashcards.
3. I need more help in Class 10 Maths. What should I do?
You can enrol in askIITians online coaching for Class 10 Maths and study from our Maths excerpts. We provide live, interactive classes to students where they can study in a classroom-like environment from the comfort and safety of their homes.