Trigonometric Ratios and Identities is a class 11th topic, it is one of the essential topics required in JEE Mains and Advanced / BITSAT preparations. Compare to other topics this chapter can be easily embedded into questions of another topic. We can expect at least 1 question directly / indirectly from this topic.

Therefore, to help JEE aspirants in revision, we are providing Revision Notes on Trigonometric Ratios and Identities.

Also, Trigonometric Ratios and Identities Previous Year JEE Mains Question are available here.

Short Notes on Trigonometric Ratios for JEE Mains and Advanced

Formula Notes | Revision Notes on Trigonometric Ratios and Identities for JEE Mains and Advanced

1. System of Measurement of Angles

(a) English System | Sexagesimal System | Degree System

English System | Sexagesimal System | Degree System

(b) French System | Centesimal System | Grade System

French System | Centesimal System | Grade System

(c) Radian System | Circular System

Radian System | Circular System

2. Relation b/w System of Measurement of Angles

Relation b/w System of Measurement of Angles

3. Trigonometric Ratios for Acute Angles

Trigonometric Ratios for Acute Angles

4. Trigonometric Ratios Table

Trigonometric Ratios Table

5. Reciprocal Trigonometric Identities

Reciprocal Trigonometric Identities

6. Fundamental Trigonometric Identities

Fundamental Trigonometric Identities

Important Results:

Fundamental Trigonometric Identities important results

7. Sign of Trigonometric Ratios in Different Quadrants

Sign of Trigonometric Ratios in Different Quadrants

RuleA S T C (Trick: After School TCollege)

8. Trigonometric Ratios of Allied Angles

Trigonometric Ratios of Allied Angles

9. Trigonometric Ratios of Compound Angles

Trigonometric Ratios of Compound Angles

Important Results:

Trigonometric Ratios of Compound Angles important results

10. Transformation Formula


11. C and D Formula

C and D Formula

12. Trigonometric Ratios of Multiple Angles

Trigonometric Ratios of Multiple Angles

Important Results:
Trigonometric ratios of multiple angles important results
13. Sine, Cosine, and Tangent of some angle less than 90⁰

Sine, Cosine, and Tangent of some angle less than 90⁰

14. Graphs of Trigonometric Functions

Graphs of Trigonometric Functions

15. Domain, Range, and Period of Trigonometric Functions

Domain, Range, and Period of Trigonometric Functions

16. Maximum and Minimum values of Trigonometric Functions

Maximum and Minimum values of Trigonometric Functions

17. Trigonometric Series

Trigonometric Series

18. Some Important Results

some important trigonometric results

19. Trigonometric Ratio of Triple Angle (For JEE Advanced Students Only)

Trigonometric Ratio of Triple Angle