Figure 1. Final result: Inverse tangent. Syntax of ATAN. =ATAN(number) where number is the tangent of the angle we want to obtain. Calculate the arctan in radians. The inverse =ATAN(A1) Result: =ATAN(A2) Result: 0. =ATAN(A3) Result: =ATAN() Result: This Excel tutorial explains how to use the Excel ATAN function with syntax and examples. The Microsoft Excel ATAN function returns the arctangent (in radians) of a number As discussed above, the basic formula for the arctan is given by, arctan (Perpendicular/Base) = θ, where θ is the angle between the hypotenuse and the base of a right-angled triangle. We use this formula for arctan to find the value of angle θ in terms of degrees or radians. Suppose, the tangent of the angle θ equals x. x = tan θ ⇒ θ = tan-1x
ATAN2 function - Microsoft Support
The Excel ATAN function calculates the arctangent (i.e. the inverse tangent) of a given number, and returns an angle, in radians, between -π/2 and +π/2. The syntax of the function is: ATAN (number) Where the number argument is the value, for which you want to calculate the arctangent. Converting from Radians to Degrees To get the tan inverse value in degrees, use the following formula in the first row under the column Arctan (Degrees) or column D: =DEGREES(ATAN(A2/C2)) Just like the previous formula, drag the fill handle down the column to calculate the inverse tan for the whole column ArcTan ArcTan. ArcTan [ z] gives the arc tangent of the complex number. ArcTan [ x, y] gives the arc tangent of, taking into account which quadrant the point is in. Details. Background & Context. Examples. open all. Basic Examples (7) Results are in radians: In [1]:= Out [1]= Divide by Degree to get results in degrees: In [3]:= Out [3]= The formula that needs to be applied is dependent on the magnitude of the values for x and y. i.e for: x> apply arctan y/x y>=0,xarctan y/x +pi yarctan y/x As discussed above, the basic formula for the arctan is given by, arctan (Perpendicular/Base) = θ, where θ is the angle between the hypotenuse and the base of a right-angled triangle. We use this formula for arctan to find the value of angle θ in terms of degrees or radians. We can also write this formula as θ = tan -1 [Perpendicular / Base] The ATAN function in Excel is a mathematical formula that calculates the arctangent of an angle. The syntax contains only one required argument and additional optional
Atan: Excel Formulae Explained - ExcelAdept
On the other hand, Excel describes the function (not too clearly) as "ATAN2(x_num, y_num) returns the arctangent of the specified x- and y-coordinates, in radians." I tested it, and indeed it takes the denominator x first Returning the inverse tangent using the Excel ATAN function. Luckily, the method we need to take to return the inverse tangent (or arctangent) is far less complicated than the maths that sits behind it! This is one of the less complex Excel formulas available – and we mean really simple! The formula that needs to be applied is dependent on the magnitude of the values for x and y. i.e for: x> apply arctan y/x y>=0,xarctan y/x +pi yarctan y/x -pi y>0,x=0 apply +pi/2 y