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8. INTRODUCTION TO TRIGONOMETRY

Trigonometry is the branch of mathematics that deals with the relationships between the angles and sides of triangles, particularly right triangles. The chapter introduces trigonometric ratios and identities, discussing the significance of sine, cosine, tangent, and their reciprocals. Additionally, it explores the values of trigonometric functions for specific angles and various trigonometric identities.

Sections

  • 8

    Introduction To Trigonometry

    This section introduces the fundamental concepts of trigonometry, focusing on the relationships between the angles and sides of right triangles.

    Learning Practice

  • 8.1

    Introduction

    This section introduces the concept of right triangles and their applications in real life, leading to the study of trigonometry.

    Learning Practice

  • 8.2

    Trigonometric Ratios

    This section introduces trigonometric ratios, defining them based on the sides of a right triangle with respect to its acute angles.

    Learning Practice

  • 8.3

    Trigonometric Ratios Of Some Specific Angles

    This section explores the values of trigonometric ratios for the angles of 0°, 30°, 45°, 60°, and 90° using geometric constructions.

    Learning Practice

  • 8.4

    Trigonometric Identities

    This section discusses trigonometric identities, explaining their importance and introducing several key identities applicable in various scenarios.

    Learning Practice

  • 8.5

    Summary

    This section summarizes the key points discussed in trigonometry, including definitions of trigonometric ratios and key properties.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Trigonometric ratios for ri...
  • Specific values of trigonom...
  • Key trigonometric identitie...

Final Test

Revision Tests

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