To calculate the cosine

The function returns the cosine of an angle in radians. The result is a numeric value between -1 and 1.

Syntax

cos(number)

Return

number

Example

cos(x) To calculate the cosine of a given number x between -1 and 1.

cos(-0.25) cos(-0.25)

Result: 0.9689124217106447

See also

acos which calculates the arccosine of a number.