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## CBSE Guide Trigonometric Functions class 11 Notes

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## Trigonometric Functions class 11 Notes Mathematics

Download CBSE class 11th revision notes for Chapter 3 Trigonometric Functions class 11 Notes Mathematics in PDF format for free. Download revision notes for Trigonometric Functions class 11 Notes Mathematics and score high in exams. These are the Trigonometric Functions class 11 Notes Mathematics prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.

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**CBSE Class 11 Mathematics Revision Notes Chapter – 3 TRIGONOMETRIC FUNCTIONS**

**Angles****Trigonometric Functions****Sum and Difference of Two Angles****Trigonometric Equations**

**Measurement of an angle**: The measure of an angle is the amount of rotation from the initial side to the terminal side.**Right angle**: If the rotating ray starting from its initial position to final position, describes one quarter of a circle, then we say that the measure of the angle formed is a right angle.- If in a circle of radius r, an arc of length l subtends an angle of θ radians, then l = rθ
- Radian measure =
- Degree measure =

**Trigonometric Functions**

**Quadrant**:

ratios I II III IV

+ + – –

+ – – +

+ – + –

- , ,
**Trigonometric values of some angles**:

0^{o} | 30^{o} | 45^{o} | 60^{o} | 90^{o} | 180^{o} | |

0 | 1 | 0 | ||||

1 | 0 | |||||

0 | 1 | 0 |

**Trigonometric Identities**:

**Trigonometric ratio of ** in terms of :

**Trigonometric ratio of ** in terms of :

**Trigonometric ratio of ** **in terms of ** :

**Trigonometric ratio of ** **in terms of ** :

**Trigonometric ratio of ** **in terms of ** :

**Trigonometric ratio of ** **in terms of ** :

**Trigonometric ratio of ** **in terms of ** :

__Trigonometric Ratios of Compound Angles__:

**Sum Formulae:**

**Difference Formulae**:

**Some Useful Results**:

__ Transformation Formulae__:

**Product Formulae (on the basis of L.H.S.) or A-B formulae**:

**Sum and Difference Formulae (on the basis of L.H.S.) or C-D formulae**:

__ Trigonometric Functions of Multiple and Sub-multiples of Angles__:

**Trigonometric Equations**:

**Principle Solutions**: The solutions of a trigonometric equation, for which are called the principle solutions.**General Solutions**: The solution, consisting of all possible solutions of a trigonometric equation is called its general solutions>**Some General Solutions**:- gives
- gives
- gives no solution
- = 0 gives no solution
- gives
- gives
- gives
- gives

## The Trigonometric Functions class 11 Notes

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**CBSE Class-11 Revision Notes and Key Points**

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