# Chapter 8 Introduction to Trigonometry Test Papers

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Chapter 8: Introduction to Trigonometry

• Trigonometric Ratios
• Trigonometric Ratios of Some Specific Angles
• Trigonometric Ratios of Complementary Angles
• Trigonometric Identities

1. Trigonometric Ratios: This section introduces the concept of trigonometric ratios of an angle, such as sine, cosine, and tangent. It explains how to find the ratios of a given angle in a right triangle.
2. Trigonometric Ratios of Some Specific Angles: This section explains how to find the trigonometric ratios of some specific angles, such as 0°, 30°, 45°, 60°, and 90°.
3. Trigonometric Ratios of Complementary Angles: This section explains how to find the trigonometric ratios of complementary angles, such as sin(90°-θ) = cosθ and cos(90°-θ) = sinθ.
4. Trigonometric Identities: This section explains some basic trigonometric identities, such as sin²θ + cos²θ = 1 and tanθ = sinθ/cosθ. It also discusses how to use these identities to solve trigonometric equations.

Overall, Chapter 8 of NCERT Maths textbook for class 10 provides an introduction to trigonometry and its basic concepts. It lays the foundation for further study of trigonometry in later chapters

Chapterwise test paper class 10 Mathematics