Related Clues:
- 0, for 180 degrees
- Calculator function
- Trig calculation
- Circle line
- Wave that can't be ridden
- Straight line through a circle
- Trigonometry figure
- 23 Across function
- Geometric line
- Without: Lat.
- Scientific calculator function
- Tangent's cousin
- ''__ nomine'' (nameless: Lat.)
- Wave of interest in math?
- It has a period of 2(pi)