COSINE
| Date | Clue |
|---|---|
| 2025-11-18 | Trigonometry ratio |
| 2023-04-30 | Trig function |
| 2019-03-03 | Trig function |
| 2018-03-07 | Secant's reciprocal |
| 2012-07-31 | Trig function |
| 2012-07-14 | 0, for 90 degrees |
| 2010-11-03 | Trig function |
| 2005-01-26 | Trig function |
| 2003-10-04 | Math function |
| 2002-04-30 | Trig function |
| 1994-07-29 | Math figure |