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

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 …

Feb 4, 2025 · Learn about the cosine function in math. Get its definition, formula, and examples in trigonometry, geometry, and calculus.

Cosine, written as cos⁡ (θ), is one of the six fundamental trigonometric functions. There are two main ways in which trigonometric functions are typically discussed: in terms of right triangles …

The cosine is a fundamental trigonometric function such that the cosine of an angle of a right triangle is the ratio of its adjacent side to the hypotenuse.

Jul 23, 2025 · The cosine function (cos) is one of the fundamental trigonometric functions used in mathematics, primarily in the study of angles and triangles. In simple terms, the cosine of an …

Simply type the angle – in degrees or radians – and you'll find the cosine value instantly. Read on to understand what is a cosine and to find the cosine definition, as well as a neat table with …

The cosine function (which is usually referred to as "cos") is one of the 6 trigonometric functions which is the ratio of the adjacent side to the hypotenuse. There are multiple formulas related to …

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

The trigonometric functions most widely used in modern mathematics are the sine, the cosine, and the tangent functions. Their reciprocals are respectively the cosecant, the secant, and the …