Trigonometric Functions and Complex Numbers covers the followings areas in the International Mathematical Olympiad (IMO) and other mathematical competitions.

• Trigonometric identity, graphs and properties of trigonometric equations, inverse trigonometric functions and trigonometric equations, solutions of triangles, trigonometric substitution and trigonometric inequality;
• The concept and operation of complex numbers, trigonometric form of a complex number, complex number and equation.

The contents are essential for the IMO. A good help for students who want to improve in these areas.