# Fortran Wiki cos

## Description

cos(x) computes the cosine of x.

## Standard

FORTRAN 77 and later

## Class

Elemental function

## Syntax

result = cos(x)

## Arguments

• x - The type shall be real or complex.

## Return value

The return value is of the same type and kind as x. The real part of the result is in radians. If x is of the type real, the return value lies in the range -1 \leq \cos (x) \leq 1.

## Example

program test_cos
real :: x = 0.0
x = cos(x)
end program test_cos