This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
CosenosPorPitagoras.svg Diagrama para el caso de la prueba del Teorema de los cosenos es partir del teorema de PItgoras Law of cosines Drawings by Magister Mathematicae Magister Mathematicae Inkscape
Page 2023 Free-images.com. All images are Public Domain