Related Clues:

• Cosine's reciprocal
• Kind of wave or curve
• Math term
• Triangle ratio
• Line intersecting a curve
• Wave type
• Trig term
• Sine's reciprocal: Abbr.
• Reciprocal of the sine
• Opposite leg divided by the hypotenuse
• Trigonometry term
• --- qua non
• It makes waves
• Math function
• Trigonometric ratio