Trigonometry

In this chapter, the children are introduced to the concept of angles, such as directed angle, zero angle, straight angle, co-terminal angle, standard angle, and quadrant angle. It also explains their systems of measurement.

The chapter deals with various trigonometric functions, such as functions with the help of a standard unit circle. It also explains the interrelation between trigonometric functions and several other functions with the help of theorems and graphs.

This chapter introduces us to trigonometric functions of compound angles. It also covers trigonometric functions of sum and difference, allied angles, multiple angles and half angles through theorems and examples.