# sinusoidal spiral

> family of curves of the form r^n = a^n cos(nθ)

**Wikidata**: [Q2064156](https://www.wikidata.org/wiki/Q2064156)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sinusoidal_spiral)  
**Source**: https://4ort.xyz/entity/sinusoidal-spiral


## References

1. Freebase Data Dumps. 2013