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This is the Advanced Trigonometry Calculator project ("advantrigoncalc")
This project was registered on SourceForge.net on Mar 19, 2011, and is described by the project team as follows:
Advanced Trigonometry Calculator is an open source calculator created in its entirety yet by Renato Alexandre Santos Freitas. In it you can find a calculator made primarily to solve trigonometric calculations but throughout its development acquired new functions beyond the trigonometric. Capabilities such as the introduction and response in four different numerical systems, the commands to force the trigonometric calculation mode, the creation and use of variables, and the easy use of previous results, make this application stand out for its large capacities and its cost to the user.
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