atan()
Returns the angle, in radians, whose tangent is the specified radian expression. This is also called arctangent.
Syntax
atan(RADIAN_EXPR)
Required Parameter
RADIAN_EXPR
- Radian expression. This function returns
null
when it receives an argument value that is not a number.
Usage
json "{}" | eval atan=atan(0.5769964003928729)
=> 0.5233333333333333 (30 * 3.14 / 180)
json "{}" | eval atan=atan(1.7299292200897902)
=> 1.0466666666666666 (60 * 3.14 / 180)
json "{}" | eval atan=atan(0) => 0
json "{}" | eval atan=atan("0") => null