If you take a circle and pull it out into a spiral or helix, the projection of that helix is a sine wave from one direction, and a cosine wave from the other. A vibrating guitar string is a sine wave.

His latest post doesn’t disappoint and shows how he uses the CORDIC algorithm to generate very precise sine and cosine waves in VHDL. CORDIC (Coordinate Rotation Digital Computer; sometimes ...

The trigonometric ratios sine, cosine and tangent are used to calculate angles and sides in right angled triangles. We are now going to extend trigonometry beyond right angled triangles and use it ...