Introduction to Trigonometry Class 10 Notes: CBSE 10th Mathematics Chapter 8, Download PDF

CBSE Class 10 Introduction to Trigonometry Notes: In this article, you can find revision notes for introduction to trigonometry. Here, short and handwritten notes have been provided for the students of Class 10 to improve their understanding related to the chapter.

Nov 21, 2023, 09:35 IST

Download PDF for CBSE Class 10 Chapter 8 Introduction to Trigonometry Notes

Introduction to Trigonometry Class 10 Notes: Revision notes for Class 10 Introduction to Trigonometry have been attached to this article for students of the current academic session 2023-2024. These short and handwritten notes on trigonometry will assist students of class 10 in clearing their doubts related to the topic and analyze their understanding at the same time.

Revision notes are your guide for the examinations. All the relevant and important parts of the chapter are picked and briefly presented at a single location, to ensure that the topic and details are understandable for the students. Also, check how the NCERT Solutions on trigonometry can be solved. Necessary formulas and theorems have been presented in the short notes to give you a fair idea of how the exercise questions are to be solved.

CBSE Class 10 Introduction to Trigonometry Trigonometry Revision Notes

Check the Class 10 revision notes on introduction to trigonometry along with a PDF download link for the same. These notes have been prepared as per the updated CBSE Class 10 Mathematics Syllabus 2024. Hence, students can be carefree while referring to these short notes made by our subject experts.

Trigonometry is the study of relationships between the sides and angles of a triangle. The word ‘trigonometry’ is derived from the Greek words ‘tri’ (meaning three), ‘gon’ (meaning sides), and ‘metron’ (meaning measure).
Trigonometric ratios of the angle- The ratios of the sides of a right triangle with respect to its acute angles are called trigonometric ratios of the angle.
Consider a right triangle ABC, where A is the acute angle, then BC happens to be the side opposite to the angle, and AB is the adjacent side to the angle A. Since AC is opposite to the right angle B, it is hypotenuse.

Trigonometric Ratios in this case would be:

Abbreviations of trigonometric ratios:

Sine A- sin A

Cosine A- cos A

Tangent A- tan A

Cosecant A- cosec A (opp of sin A)

Secant A- sec A (opp of cos A)

Cotangent A- cot A (opp of tan A)

The values of the trigonometric ratios of an angle do not vary with the lengths of the sides of the triangle, if the angle remains the same.
Pythagoras Theorem- (height)²= (length)² - (breadth)²
How to find other trigonometric ratios, if one ratio is given?