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Cosine
01
(mathematics) the ratio of the adjacent side to the hypotenuse
Example
The cosine function (cos) in trigonometry expresses the ratio of the adjacent side to the hypotenuse.
Trigonometric identities express relationships between trigonometric functions such as sine, cosine, and tangent.
Trigonometric ratios like sine, cosine, and tangent involve the relationship between the sides of a right triangle, including the hypotenuse.
Sine and cosine waves are periodic functions with periods that are multiples of 2π, a property tied to the circle and pi.
Trigonometric ratios like sine, cosine, and tangent are used to solve problems involving right triangles.
