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  1. Sine and cosine - Wikipedia

    In mathematics, sine and cosine are trigonometric functions of an angle.

  2. Sine, Cosine and Tangent - Math is Fun

    Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Before getting stuck into the functions, it helps to give a name to each side of a right …

  3. Sine | Definition, Formulas, & Facts | Britannica

    sine, one of the six trigonometric functions, which, in a right triangle ABC, for an angle A, is sin A = length of side opposite angle A/ length of hypotenuse. (The other five trigonometric functions are …

  4. Sine Function in Math - Definition, Formula, Examples

    Feb 18, 2025 · The sine function, commonly written as sin (θ), is the ratio of the opposite side to the hypotenuse of a right triangle. It is one of the primary trigonometric functions used in mathematics.

  5. SINE Definition & Meaning - Merriam-Webster

    The meaning of SINE is the trigonometric function that for an acute angle is the ratio between the leg opposite the angle when it is considered part of a right triangle and the hypotenuse.

  6. Sine -- from Wolfram MathWorld

    The sine function sinx is one of the basic functions encountered in trigonometry (the others being the cosecant, cosine, cotangent, secant, and tangent). Let theta be an angle measured counterclockwise …

  7. Sine, Cosine, Tangent, explained and with Examples and practice ...

    This page explains the sine, cosine, tangent ratio, gives on an overview of their range of values and provides many practice problems on identifying the sides that are opposite and adjacent to a given …

  8. Sine Function (sin θ): Definition, Formula & Unit Circle Examples

    Sine is opposite over hypotenuse, cosine is adjacent over hypotenuse, and tangent is opposite over adjacent. They are related by the identity tan θ = sin θ / cos θ.

  9. Sine calculator | sin (x) calculator - RapidTables.com

    Sine calculator online. sin (x) calculator.

  10. Sine - Graph, Table, Properties, Examples | Sine Function

    The sine of an angle is a trigonometric function that is denoted by sin x, where x is the angle in consideration. In a right-angled triangle, the ratio of the perpendicular and the hypotenuse is called …