The ATAN function is the inverse of the TAN function.
Graph
The graph of ATAN, shown above, visualizes the output of the function.
Output of the function is limited to the range from -/2 to /2.
ACOS Function
The ACOS function returns the inverse cosine of a number.
The function is the inverse of COS and expects input in the range from -1 to 1.
ASIN Function
The Excel ASIN function returns the inverse sine of a number.
