Historical clue formulations

• Certain trig functions — 2026-02-22
• Unit circle ratios — 2025-11-02
• Producers of some waves — 2025-05-24
• Certain trig ratios — 2023-05-28
• Trig ratios — 2022-04-25
• Right triangle ratios — 2021-10-08
• Trigonometry's law of ___ — 2020-09-08
• Certain math ratios — 2018-05-01
• Right triangle ratios — 2016-12-30
• Trig functions — 2016-09-22
• Trig's law of ___ — 2016-07-24
• Trig ratios — 2015-11-13
• Trig functions — 2015-08-30
• Trig functions — 2013-01-31
• Curve creators — 2011-06-11
• They can make waves — 2010-11-26
• Math figures — 2009-06-25
• Trig ratios — 2009-05-24
• They can make waves — 2007-08-03
• Trigonometric ratios — 2007-07-09
• Trig ratios — 2007-05-15
• Trig ratios — 2007-04-08
• Trig functions — 2006-09-04
• Trig functions — 2004-03-12
• Trig figures — 2002-08-20
• Math functions — 2001-03-25
• Trig ratios — 1997-06-19