NCERT Solutions of Chapter 3 Class 11 Trigonometry is available free at teachoo. You can check the detailed explanation of all questions of exercises, examples and miscellaneous by clicking on the Exercise link below.

We had learned Basics of Trigonometry in Class 10. In this chapter, we will learn

- What is a
**positive or a negative angle** - Measuring angles in
**Degree**, Minutes and Seconds **Radian**measure of an angle- Converting
**Degree to Radians**, and vice-versa **Sign**of sin, cos, tan in all 4 quadrants- Finding
**values of trigonometric functions when one value is given**(Example: Finding value of sin, cot, cosec, tan, sec, when cos x = -3/5 is given) - Finding Value of trigonometric functions,
**given angle** - Solving questions by
**formula**like (x + y) formula, 2x 3x formula, Cos x + cos y formula , 2 sin x sin y formula - Finding
**principal and general solutions**of a trigonometric equation **Sin and Cosine Formula**with supplementary Questions

Important questions are marked, and Formula sheet is also provided. Click on an exercise or topic to begin.