| Answer | Crossword Clue |
|---|---|
| RATIO | Sine, for one |
| ACME | One, for a sine curve |
| RATIO | Sine, for example |
| RATIOS | Sine and cosine, for two |
| PRESSES | Sine qua non, for newspapers. |
| GRAPH | Place for a sine curve |
| TRAPEZE | Sine qua non for an aerialist. |
| INDEX | Sine qua non for a textbook. |
| VIGOR | Sine qua non for an athlete |
| FOURHANDS | Sine qua non for certain duets |
| PETROLEUM | Sine qua non for the wheels of industry. |
