Technology and the use of software in the educational process are becoming increasingly more important in recent times. This article aims to demonstrate how to use the program Maple to solve some mathematical problems and in the process of teaching mathematics. This program isn't only a computing environment, but also a useful tool for teachers and students, for lectures, training, projects, etc. The author presents how Maple can be used to calculate some trigonometric polynomials and how to create some graphical representations in this program. Trigonometric polynomials and Fourier trigonometric series are tools of numerical methods and mathematical analysis and are used by engineers in the numerical processing of electric signals and imag...