Chapters
Exercise 1
Express the following angles in degrees:
1
rad
2
rad.
3
rad.
Exercise 2
Express the following angles in radians:
1
2 
3 
Exercise 3
Calculate the trigonometric ratios of the following angles:
1 
2 
3 
4 
5 
6 
Solution of exercise 1
Express the following angles in degrees:
1
rad
2
rad.
3
rad.
Solution of exercise 2
Express the following angles in radians:
1
2 
3 
Solution of exercise 3
Calculate the trigonometric ratios of the following angles without using a calculator: (all the angles are in degree)
1 
Since the angle is in third quadrant, only
will be positive.
2 
Since the angle is in fourth quadrant, only
will be positive.
3 
Since the angle is in second quadrant, only
will be positive.
4 
Since the angle is in third quadrant, only
will be positive.
5 
Since the angle is in third quadrant, only
will be positive.
6 
Since the angle is in fourth quadrant, only
will be positive.









It was good and worth learning