Chapter 6 of 27
Revision Notes
Trigonometric Functions — Revision Notes
NEST · Mathematics
Free Trigonometric Functions revision notes for NEST Mathematics 2026 — key concepts, formulas, and definitions for quick revision.
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Key concepts, formulas, and definitions from Trigonometric Functions for NEST Mathematics preparation.
Key Topics to Revise
1
Angles and Their Measurements
- An angle is formed by the rotation of a ray about its initial position
- Positive angles are measured anti-clockwise, negative angles clockwise
- Two main systems: Degree measure (360° = one complete revolution) and Radian measure
2
Trigonometric Functions and Their Properties
- Six trigonometric functions: sine, cosine, tangent, cotangent, secant, cosecant
- Primary functions are sine, cosine, and tangent; others are reciprocals
- Domain and range vary for different functions
3
Trigonometric Identities and Allied Angles
- Allied angles have sum or difference as multiples of π/2
- Functions of allied angles follow specific patterns based on quadrant
- Co-function identities relate complementary angles
4
Addition and Subtraction Formulas
- Addition formulas express trigonometric functions of sum/difference of angles
- These are fundamental for deriving other identities
- Double and triple angle formulas are special cases
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Key Concepts
Two primary systems existThe six functions are sineKey angles (0°Fundamental identities includeAllied angles are related by multiples
Frequently Asked Questions
What topics are covered in Trigonometric Functions for NEST?
Trigonometric Functions is an important chapter in NEST Mathematics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Angles and Their Measurements, Trigonometric Functions and Their Properties, Trigonometric Identities and Allied Angles, Addition and Subtraction Formulas.
How important is Trigonometric Functions for NEST?
Trigonometric Functions is a frequently tested chapter in NEST Mathematics. Questions from this chapter appear regularly in previous year papers. There are 557 practice questions available for this chapter.
How to prepare Trigonometric Functions for NEST?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.
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