Sine

sine isn’t a squiggle. it’s a height.

spin a point — its height draws the wave live

The height of a point going around a circle, tracked against how far it has turned, is the entire definition of sine. One full trip around the circle produces exactly one full wave, because the wave is just that same height unrolled over time.

Concepts: trigonometry, waves.

An interactive you play with one thumb, on Wundr.