MOBILE FRIENDLY -- -- 100% PEN It is a project of graphical representations of functions with the cosine. There are 10 waves and one is customizable. Look inside to see the shows. You can reinvent it as long as you give me credit in your projects. 100% PEN and made by me. #PEN #COS #TRIGONOMETRY #PENART #ART #Pen #PEN #Cos Actually, this project has 21 fav, a half of 42
