The arctangent of x is defined as the inverse tan function of x. Please change the value below and click "Calculate" button to see the results.
The arctangent function is the inverse function of y = tan(x)
Formula: arctan(y) = tan-1(y) = x + kπ
Arctan Range: between -π/2 and π/2 radians
|y||x = arctan(y)|