Returns the principal value of the arc tangent of y/x, expressed in radians. To compute the value, the function takes into account the sign of both arguments in order to determine the quadrant. The arguments may be zero.
| Number | Type | Compulsory | Default | Description |
| 1 | Real | Yes | Y | |
| 2 | Real | Yes | X |
Y
X
Return type: Real
atan(y/x) in radians
| ▲Function Summary▲ | ||
| ◄ atan | atan2_deg ▶ | |