SEC

Sec (wine), is a French term used to indicate the sweetness level of a wine.

SEC, Sec, or Seč may also refer to:

Companies

Education

Government

Mathematics

Secant is a term in mathematics derived from the Latin secare ("to cut"). It may refer to:

Seč (Chrudim District)

Seč is a town in the Pardubice Region of the Czech Republic with approximately 1,700 inhabitants.

Villages Hoješín, Javorka, Kraskov, Počátky, Proseč, Prosíčka, Přemilov, Ústupky and Žďárec u Seče are administrative parts of Seč.

Seč dam was built next to the town.

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Trigonometric functions

In mathematics, the trigonometric functions (also called the circular functions) are functions of an angle. They relate the angles of a triangle to the lengths of its sides. Trigonometric functions are important in the study of triangles and modeling periodic phenomena, among many other applications.

The most familiar trigonometric functions are the sine, cosine, and tangent. In the context of the standard unit circle (a circle with radius 1 unit), where a triangle is formed by a ray originating at the origin and making some angle with the x-axis, the sine of the angle gives the length of the y-component (the opposite to the angle or the rise) of the triangle, the cosine gives the length of the x-component (the adjacent of the angle or the run), and the tangent function gives the slope (y-component divided by the x-component). More precise definitions are detailed below. Trigonometric functions are commonly defined as ratios of two sides of a right triangle containing the angle, and can equivalently be defined as the lengths of various line segments from a unit circle. More modern definitions express them as infinite series or as solutions of certain differential equations, allowing their extension to arbitrary positive and negative values and even to complex numbers.