What is the input range?

arctan accepts any real number; there is no restriction on the input.

What is the output range?

arctan returns angles from -90° to 90° (-π/2 to π/2 radians), excluding the endpoints.

Inverse tangent: enter a value to get the angle in degrees. arctan(x) = angle whose tangent is x.

Value

What is the input range?: arctan accepts any real number; there is no restriction on the input.
What is the output range?: arctan returns angles from -90° to 90° (-π/2 to π/2 radians), excluding the endpoints.

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