ATAND
ATAND returns a real floating-point value that is an approximation of the inverse (arc) tangent in degrees of x or of a ratio x/y.
- x and y
- Expressions. If x alone is specified it must be real. The result has the base and precision of x, and is in the range:
-90 < ATAND(x) < 90
If x and y are specified, each must be real. The value of the result is given by:
For argument requirements and attributes of the result, see ATAN.