WMPRO, WMMINI FW > 1.0 WMMEGA FW > 2.0

Return cosine of a radian angle

radian_angle: Angle in radians

Cosine of angle

<? 
$pi=3.14159;
print(cos($pi)); //result is -1
print(cos($pi*2)); //result is 1
?>

sin() - Return sine of a radian angle