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ArcTan
ArcTan
[
z
]
gives the arc tangent
of the complex number
.
ArcTan
[
x
,
y
]
gives the arc tangent of
, taking into account which quadrant the point
is in.
MORE INFORMATION
Mathematical function, suitable for both symbolic and numerical manipulation.
All results are given in radians.
For real
, the results are always in the range
to
.
For certain special arguments,
ArcTan
automatically evaluates to exact values.
ArcTan
can be evaluated to arbitrary numerical precision.
ArcTan
automatically threads over lists.
ArcTan
[
z
]
has branch cut discontinuities in the complex
plane running from
to
and
to
.
If
or
is complex, then
ArcTan
[
x
,
y
]
gives
. When
,
ArcTan
[
x
,
y
]
gives the number
such that
and
.
EXAMPLES
CLOSE ALL
Basic Examples
(5)
Results are in radians:
In[1]:=
Out[1]=
Divide by
Degree
to get results in degrees:
In[1]:=
Out[1]=
ArcTan
[
x
,
y
]
gives the angle of the point
{
x
,
y
}
:
In[1]:=
Out[1]=
In[2]:=
Out[2]=
In[1]:=
Out[1]=
In[1]:=
Out[1]=
Scope
(6)
Generalizations & Extensions
(3)
Applications
(5)
Properties & Relations
(4)
Possible Issues
(1)
Neat Examples
(1)
SEE ALSO
Arg
Tan
ArcCot
ArcTanh
Degree
TrigToExp
TrigExpand
TUTORIALS
Some Mathematical Functions
Elementary Transcendental Functions
RELATED LINKS
MathWorld
The Wolfram Functions Site
NKS|Online
(
A New Kind of Science
)
MORE ABOUT
Elementary Functions
Inverse Functions
Mathematical Functions
Trigonometric Functions
New in 1
© 2008 Wolfram Research, Inc.
, the results are always in the range 
to 
. 
plane running from 
to 
and 
to 
.
EXAMPLES
Basic Examples 
Scope 