AIPS HELP file for ATAN2 in 31DEC25
ATAN2
Type: verb (function)
Use: To find the angle of a vector given the Y and X
coordinates. The result is in degrees.
Grammer: ATAN2 (value1,value2)
Example: ATAN2(-1.0,0.0)
Find the angle of vector (0.0,-1.0) i.e., -90 degrees.