======cos======
WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0
Return cosine of a radian angle
====Description====
float
cos (
number
$radian_angle
)
====Parameter====
$radian_angle: Angle in radians
====Return Values====
Float: Cosine of angle
====Examples====
====See Also====
[[sin()]] - Return sine of a radian angle