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 a right …

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

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.

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 and in terms …

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 cosine …

Feb 24, 2025 · There are six trigonometric functions, of which sine, cosine, and tangent functions are basic functions, while secant (sec), cosecant (cosec or csc), and cotangent (cot) are derived from the …

Cosine definition In a right triangle ABC the cosine of α, cos (α) is defined as the ratio betwween the side adjacent to angle α and the side opposite to the right angle (hypotenuse):

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 given angle.

Cosine is a fundamental trigonometric function that relates an angle in a right triangle to the ratio of the adjacent side to the hypotenuse. It plays a crucial role in various fields, including geometry, physics, …