Sine

Pronunciation: /ˈsaɪn/

Sine (noun)

  1. A number from a right triangle that compares the length of the side opposite an angle to the triangle’s hypotenuse.
  2. In periodic motion, a function that describes smooth up-and-down change over time, often used to model waves.

Examples

  • The sine of the angle gives a trig function value.
  • Sine values change smoothly as the angle changes.