Fernandes Pereira, Ângela E. and Correia Vaz, H.V. 2022. GeoGebra in the Study of Trigonometric Functions from Graphical Analysis. Revista do Instituto GeoGebra Internacional de São Paulo. 11, 2 (Nov. 2022), 119–137. DOI:https://doi.org/10.23925/2237-9657.2022.v11i2p119-137.