One quarter of a cycle of sinusoidal wave. This can be used to build complete sine waves. engineering electrical circuit RSA Quarter Sine Wave
You really lucked out today. For the first time ever, we’re offering free Illustrator pattern swatches. This set is a collection of curved and angled patterns. There are six total: curved and sharp flat b&w, curved and sharp shaded, and curved an Waves and Ridges Illustrator Swatches wave ridge illustrator Waves and Ridges Illustrator Swatches