COSEC
| Date | Clue |
|---|---|
| 2026-01-22 | Trig ratio |
| 2025-12-28 | Sine's reciprocal, in trig |
| 2019-08-03 | Trig function |
| 2019-07-15 | Trig ratio |
| 2018-11-11 | Trig function |
| 2017-11-22 | Sine's reciprocal, in trig |
| 2017-11-15 | Sine's reciprocal, briefly |
| 2014-04-22 | Trig ratio |
| 2011-12-04 | Reciprocal function in trig |
| 2003-03-20 | Trig. function |
| 1997-10-04 | Trig function |
| 1997-06-25 | Trig. function |