## ATAN function: Description, Usage, Syntax, Examples and Explanation

What is ATAN function in Excel? ATAN function is one of the Math and Trig functions in Microsoft Excel that returns the arctangent, or inverse tangent, of a number. The arctangent is the angle whose tangent is number. The returned angle is given in radians in the range -pi/2 to pi/2. Syntax of ATAN function ATAN(number) The …