Definitions

1. noun

A trigonometric ratio of the ratio of the length of the side adjacent to a given angle to the length of the hypotenuse in a right-angled triangle.

“The cosine of the angle between the two vectors was calculated using the dot product formula.”

2. verb

To calculate or determine the cosine of an angle or a set of angles.

“The mathematician cosined the angles of the triangle to find its area.”

3. adjective

Related to or characterized by the cosine of an angle or a set of angles.

“The cosine-based model predicted the stock prices more accurately than the traditional models.”