Cosine

Writing functions:

cos(x)

Returns the cosine of the angle where the angle is given in radians (1 pi radians = 180 degrees). Convert radians to degrees, you can use the formula:

degrees = pi * x /180

Where pi - PI, x - value of the angle in radians.

The cosine is one of the main trigonometric functions that is used to find the ratio of the length of the adjacent catheter to the hypotenuse in a right triangle. This function is also widely used in mathematics, physics, engineering, computer science and other fields.

The cosine is defined as the ratio of the adjacent catheter to the hypotenuse of the triangle. The formula for calculating the cosine of the angle is equal to the ratio of the adjacent catheter to the hypotenuse. The cosine is an even function, which means that cos(-x) = cos(x).

In mathematics, the cosine is also used in solving equations, finding the roots of equations, when working with trigonometric identities, etc. In physics, the cosine plays an important role in solving problems in mechanics, electricity and magnetism, acoustics, etc.

The cosine is also often used in computer science when working with graphics and animation, when creating 3D models, when processing signals, etc. In general, the cosine is a universal mathematical function that finds application in many fields of science and technology.

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