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# NCERT Solutions For Class 10 Maths Chapter 8 Exercise 8.2 Introduction To Trigonometry - PDF Download

Class 10

NCERT solutions for class 10 maths chapter 8 ex 8.2 Introduction to Trigonometry now progresses to the next value of the trigonometric ratios of some specific angles. When studying trigonometry, students learn how to use the trigonometric ratios of five different angles: 0° , 30° (30), 45°, 60° , and 90°. This exercise requires students to remember the trigonometric values of the various angles in order to solve the problem.

Ex 8.2 class 10 maths solutions is a concise exercise consisting of four questions. The questions are presented in various formats, including tick the correct answer, word problem, true and false, and evaluation questions. By solving these problems, students gain a better understanding of why a trigonometric ratio is assigned to a particular number.

NCERT solution for class 10 maths chapter 8 ex 8.2 with all solved problems is available here in free PDF format which students can easily download and practice.

## Topics Covered in Exercise 8.2 Class 10 Mathematics Questions

Class 10 maths ex 8.2 provides an introduction to concepts such as trigonometric ratios of some specific angles.

 1 Trigonometric Ratios of Some SpecificAngles
1. Trigonometric Ratios of Some SpecificAngles - Trigonometric ratios of some specific angles are described as the ratio of the sides of a right angle triangle with respect to any of its acute angles.

The values of all the trigonometric ratios of 0°, 30°, 45°, 60° and 90° are given below.

 ∠A 0° 30° 45° 60° 90° sin A 0 1/2 1/√2 √3/2 1 cos A 1 √3/2 1/√2 1/2 0 tan A 0 1/√3 1 √3 Not defined cosec A Not defined 2 √2 2/√3 1 sec A 1 2/√3 √2 2 Not defined cot A Not defined √3 1 1/√3 0

From the table above you can observe that as  A increases from 0° to 90°, sin A increases from 0 to 1 and cos A decreases from 1 to 0.

## Tips for Solving Exercise 8.2 Class 10 chapter 8 Introduction to Trigonometry

Here are some helpful tips from our experts in the subject to help you figure out how to solve questions about ex 8.2.

1. NCERT solutions for class 10 maths chapter 8 ex 8.2 can only be solved once students are familiar with the ex 8.2. This Is because ex 8.2 Is an extended ex that requests students to remember values and solve equations.

2. The most important thing to keep in mind as you solve this exercise is that you need to make a table with all the trigonometric ratios and keep it with yourself while revising the questions.

3. Students can practice a lot of questions using the right-angle triangle. After remembering the values of sin, cos and tan function of specific angles, students can solve this exercise with ease.

## Importance of Solving Ex 8.2 Class 10 Maths chapter 8 Introduction to Trigonometry

Students can check below the benefits of solving ex 8.2 class 10 maths chapter 8.

1. It provides a step-by-step, easy-to-understand explanation for each of the solutions to create a solid foundation for understanding the math ex 8.2.

2. NCERT solution class 10 maths chapter 8 ex 8.2 helps students to score well in the exams.

3. After solving several questions from the solutions, you can solve all the questions from the ex 8.2 easily.

4. This will help you get a better understanding of each concept of the topic.

#### Frequently Asked Questions

Question 1. What is the value of tan 45° ?

Answer 1. The value of tan 45° is 1.

Question 2. State whether it is true or false. The value of cos 30° is equal to sin 60°.

Answer 2. Yes, the value of cos 30° is equal to sin 60°.

Question 3. What are the trigonometric ratios of specific angles according to NCERT solutions for class 10 maths ex 8.2?

Answer 3. Trigonometric ratios of some specific angles are described as the ratio of the sides of a right angle triangle with respect to any of its acute angles.