| 2026-07-05 | Kind of wave |
| 2026-03-30 | Basic trig ratio |
| 2026-01-10 | Math function |
| 2025-09-02 | Kind of wave |
| 2025-03-30 | ___ wave |
| 2024-12-17 | Trigonometry function |
| 2024-08-23 | 0, for 180° |
| 2024-06-21 | Function that can be derived from a unit circle |
| 2024-06-09 | Opposite side divided by the hypotenuse |
| 2024-04-20 | 1, for 90° |
| 2024-02-25 | Cosecant's reciprocal |
| 2023-11-17 | 0, for 180 |
| 2023-07-13 | 0, for 180 degrees |
| 2023-07-10 | Trig function |
| 2023-05-17 | Kind of wave |
| 2022-10-02 | Without: Lat. |
| 2022-09-16 | ___ wave |
| 2022-08-28 | Wave to one's math professor? |
| 2022-03-05 | Kind of wave |
| 2021-12-23 | It's 1 for 90° |
| 2021-12-19 | Trig function |
| 2021-09-03 | 0, for 0° |
| 2021-05-07 | Reciprocal of cosecant |
| 2021-04-04 | Ratio of an angle's opposite side to the hypotenuse |
| 2021-03-11 | Function yielding 0 when applied to pi |
| 2020-12-16 | Kind of wave |
| 2020-03-27 | Kind of wave |
| 2020-01-26 | Trig function |
| 2019-01-14 | Trigonometric ratio |
| 2018-12-03 | Basic trig ratio |
| 2018-07-31 | Function associated with oscillation |
| 2018-06-27 | ___ qua non |
| 2018-06-10 | ___ qua non |
| 2018-03-28 | ___ qua non (essential element) |
| 2018-01-18 | Wave to a math teacher? |
| 2017-08-05 | 0, for 0 degrees |
| 2017-05-17 | ___ wave (oscilloscope output) |
| 2017-02-14 | Trig function |
| 2016-10-14 | Kind of wave |
| 2016-07-15 | It makes a wave |
| 2016-03-15 | It's 1 for 90° |
| 2016-02-27 | ___ wave |
| 2015-12-26 | 0.5, for 150° |
| 2015-06-19 | Wave creator |
| 2015-05-04 | ___ qua non |
| 2015-03-17 | ___ wave |
| 2014-12-19 | 0, for 180 degrees |
| 2014-11-19 | It has a reciprocal function |
| 2014-10-04 | 0.5, for 30 degrees |
| 2014-09-13 | It's between -1 and +1 |
| 2014-04-22 | Reciprocal of 12-Down |
| 2014-02-20 | ___ die |
| 2013-12-19 | Kind of wave |
| 2012-11-11 | Periodic function |
| 2012-01-19 | Trig term |
| 2011-08-14 | It has a period of 2(pi) |
| 2009-12-14 | Trig function |
| 2009-10-08 | Kind of wave |
| 2009-08-10 | ___ qua non |
| 2009-07-05 | Fourier series function |
| 2009-01-15 | Trig ratio |
| 2008-09-28 | Trig ratio |
| 2008-08-23 | 0, for 180 degrees |
| 2008-08-14 | ___ wave |
| 2007-10-21 | Right triangle figure |
| 2007-09-25 | Trig function |
| 2007-02-01 | ___ mora (without delay, in Latin) |
| 2006-06-16 | ___ wave |
| 2006-02-10 | Math ratio |
| 2006-01-16 | Trig function |
| 2005-09-11 | ___ function |
| 2004-10-11 | Trig function |
| 2004-05-03 | Trig term |
| 2004-04-26 | Trig function |
| 2003-10-21 | Trig ratio |
| 2003-04-19 | Trigonometry term |
| 2003-04-18 | Opposite leg divided by the hypotenuse |
| 2002-02-26 | Cosecant's reciprocal |
| 2001-12-10 | Trig ratio |
| 2001-06-06 | Kind of wave |
| 2000-07-23 | Kind of curve |
| 2000-01-16 | It ranges from -1 to +1 |
| 1999-10-01 | Kind of curve |
| 1999-03-22 | Trig function |
| 1998-09-20 | Math ratio |
| 1998-05-10 | Fourier series function |
| 1998-02-15 | Ratio of AB to BC, say |
| 1997-12-21 | Kind of wave |
| 1997-10-20 | Trig ratio |
| 1997-07-29 | Kind of curve, in math |
| 1997-05-20 | ___ qua non |
| 1996-11-28 | Trig figure |
| 1996-07-28 | Kind of curve |
| 1996-06-13 | ___qua non |
| 1996-05-20 | ___qua non |
| 1996-02-05 | Trig function |
| 1995-08-14 | Trig function |
| 1995-07-28 | Trigonometric ratio |
| 1995-01-27 | Kind of curve |
| 1994-08-17 | Tangent's cousin |
| 1994-06-20 | Trig function |
| 1994-05-09 | Trig function |