📒 Definitions (Trigonometry)
Learn and practice Class 9 Mathematics Chapter 6 Definitions on Trigonometry with clear explanations. This page includes free downloadable notes aligned with the Punjab PECTA 2025 syllabus.
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Chapter 1
Real Numbers
Chapter 2
Logarithms
Chapter 3
Sets and Functions
Chapter 4
Factorization and Algebraic Manipulation
Chapter 5
Linear Equations and Inequalities
Chapter 6
Trigonometry
Chapter 7
Coordinate Geometry
Chapter 8
Logic
Chapter 9
Similar Figures
Chapter 10
Graphs of Functions
Chapter 11
Loci and Construction
Chapter 12
Information Handling
Chapter 13
Probability
Chapter 6 - Trigonometry
This chapter focuses on trigonometry, the relationships between angles and sides of triangles, and the fundamental trigonometric functions and identities.
Chapter 6 introduces students to the fundamental concepts of trigonometry, starting with basic angle definitions and progressing to trigonometric ratios, identities, and their practical applications. This chapter forms the foundation for understanding how angles and triangles relate mathematically.
The definitions cover essential topics including angle measurement in degrees and radians, trigonometric functions (sine, cosine, tangent), complementary angle relationships, and the important trigonometric identities that form the basis for solving trigonometric equations and problems.
Key Topics Covered
- Basic angle definitions and types of angles
- Degree and radian measurement systems
- Trigonometric ratios and functions
- Complementary angle relationships
- Fundamental trigonometric identities
- Special angle values (30°, 45°, 60°)
- Angle of elevation and depression
Important Note:
Understanding these trigonometric definitions is crucial for solving problems involving right-angled triangles, analyzing periodic phenomena, and preparing for more advanced mathematical concepts in higher classes.
Created by Hira Science Academy | Aligned with PECTA 2025 Syllabus