Name
atan — return the arc tangent of a value, in radians
Synopsis
atan(
|
in x double precision); |
Description
atan returns the arc tangent of
x as an angle in radians in the range -π/2 to π/2.
The argument is converted to an IEEE 64-bit float and the result is of
that type.
Parameters
x
Tangent of the desired angle, as double precision.
Return Types
atan returns a double precision angle in
radians.
Examples
Example 24.520. Simple example
SQL> select atan(1);
unnamed
DOUBLE PRECISION NOT NULL
_______________________________________________________________________________
0.7853981633974483
1 Rows. -- 0 msec.