Related Clues:
- See 23 Across
- Trigonometry curve
- Camera view
- Acute subject?
- Reporter's slant
- 0, for 180 degrees
- Calculator function
- It might be acute or obtuse
- Trig calculation
- Wave that can't be ridden
- Each one in a square is 90 degrees
- It's a matter of degrees
- Billiards player's consideration
- Two lines may make one
- Sine's reciprocal