Arctan Arc tangent Function Calculator tool

arctan    

y=arctan(x) Graph

The usual principal values of the arctan(x) and arccot(x) functions graphed on the cartesian plane.

y x = arctan(y)
degrees radians
-1.732050808 -60° -π/3
-1.000000000 -45° -π/4
-0.577350269 -30° -π/6
0 0
0.577350269 30° π/6
1.000000000 45° π/4
1.732050808 60° π/3