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 …

cosine, one of the six trigonometric functions, which, in a right triangle ABC, for an angle A, is cos A = length of side adjacent to angle A/ length of hypotenuse. (The other five trigonometric …

Feb 4, 2025 · The cosine function (cos) relates an angle of a right triangle to the ratio of the length of the adjacent side (the side next to the angle) to the hypotenuse (the longest side of the …

Jul 23, 2025 · What is the Cosine Function? The cosine function is defined as the ratio of the adjacent side of a right-angled triangle to its hypotenuse. The cosine function is abbreviated as …

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

In any right triangle, the cosine of an angle is the length of the adjacent side (A) divided by the length of the hypotenuse (H). In a formula, it is written simply as 'cos'. Often remembered as …

Nov 30, 2025 · Sine and cosine, denoted as sin (θ) and cos (θ), are fundamental trigonometric functions that associate each angle, defined from the unit circle, with a value between -1 and …

Cosine is one of the primary mathematical trigonometric ratios. The ratio of the lengths of the side adjacent to the angle and the hypotenuse of a right-angled triangle is called the cosine …

The cosine (abbreviated " cos ") is a type of trigonometric function. Definition 1 is the simplest and most intuitive definition of the cosine function. It basically says that, on a right triangle, the …