From Creatures Wikia
ATAN is a CAOS command equivalent to the mathematical arctangent function.
Syntax: ATAN tan (float)
Returns, as a float, the arctangent of tan, i.e. the angle whose tangent is tan. It is the inverse of TAN_. It returns a value between -90 and 90.
|This article about a CAOS command or function needs further examples.|