COSEC
Set to 2 different clues across 3 published puzzles, most often “Trig. function” — The New York Times, Thursday, 20 March 2003.
5 letters
Every clue on record, most used first
- Trig. function2 times
The New York Times — Thursday, 20 March 2003
- Trig functiononce
The New York Times — Saturday, 4 October 1997