The TF Softwares Trigonometry Calculations application was developed to support students, in order to facilitate and assist the understanding of the basic calculations that are necessary to find the values of the sides and angles of triangles. The Trigonometry Calculations application has in its content: _ Metric Relations in the Right Triangle; _ Pythagorean theorem: Find the values of the Hypotenuse and the legs; _ Trigonometric Relations: Calculate the Sine, Cosine, Tangent, Cosecant, Sec