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) | |
|---|---|---|
| degrees | radians | |
| -1.732050808 | -60° | -π/3 |
| -1 | -45° | -π/4 |
| -0.577350269 | -30° | -π/6 |
| 0 | 0° | 0 |
| 0.577350269 | 30° | π/6 |
| 1 | 45° | π/4 |
| 1.732050808 | 60° | π/3 |