Answer: SINE

Sine is a trigonometric function commonly denoted as "sin." It is defined as the ratio of the length of the side opposite a given angle in a right triangle to the hypotenuse of the triangle. In other words, it relates the ratio of the height of a point on a unit circle to the length of the circle's radius. Sine values range between -1 and 1, and they are used to solve various problems in mathematics and physics involving angles and triangles.

Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: 0, for 180°. Explanations are generated by AI and may be inaccurate.