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 …

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

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 …

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 …

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 …

There are multiple formulas related to cosine function which can be derived from various trigonometric identities and formulas. Let us learn the cosine formulas along with a few solved …

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 …

In a right-triangle, cos is defined as the ratio of the length of the adjacent side to that of the longest side i.e. the hypotenuse. Suppose a triangle ABC is taken with AB as the hypotenuse …

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 …

Use this cos calculator to easily calculate the cosine of an angle given in degrees or radians. The cosine is encountered in geometry problems involving right triangles, circles, and others where …