Summary
We use plane tilings with golden rectangles to derive arctangent identities.
Acknowledgments
The author wishes to thank an anonymous reviewer and the Editor for helpful suggestions on an earlier draft of this note.
Additional information
Notes on contributors
Roger B. Nelsen
Roger B. Nelsen (MR Author ID: 237909) is a professor emeritus at Lewis & Clark College, where he taught mathematics and statistics for 40 years.