by AdamStanislav - uploaded on May 26, 2017, 3:29 am
While it is impossible to draw an exact sine curve using cubic Bézier curves, it is possible to come close by using the values I calculated so the X-coordinates are a straight line and the first Y control point of the first quadrant of the size curve occupying a 1x1 space is equal to 4*(sqrt(2)-1)/3, or roughly 0.55228474983. This is explained in my free e-book available for download at https://www.smashwords.com/books/view/483578 and at most e-book retailers, including the Apple store (for free).
See SVG source code for more details.
P.S. I did this mostly to answer the question found at https://forums.adobe.com/thread/2237600 (the Adobe forum)