coscosine function (radians)

Syntax   cos (r : real) : real

Description   The cos function is used to find the cosine of an angle given in radians. For example, cos (0) is 1.

Example   This program prints out the cosine of p/6, 2p/6, 3p/6, up to 12p/6 radians.

        const pi := 3.14159
        for i : 1 .. 12
            const angle := i * pi / 6
            put "Cos of ", angle, " is ", cos (angle)
        end for

See also   the sin and tan functions for calculating sine and tangent.

the cosd function which finds the cosine of an angle given in degrees. (2p radians are the same as 360 degrees.)

See also predefined unit Math.