Returns the arc tangent of a numeric value (integer or real).

Versions 15 and later

This function is now available for Android applications.

New in version 15

This function is now available for Android applications.

This function is now available for Android applications.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

This function is now available for iPhone/iPad applications.

Versions 18 and later

This function is now available in Android widget mode.

New in version 18

This function is now available in Android widget mode.

This function is now available in Android widget mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

This function is now available in Universal Windows 10 App mode.

Example

// Retrieve the arc tangent of 12 ResTang = ArcTan(12) // Returns 85.2363583093

Syntax

<Result> = ArcTan(<Numeric value>)

<Result>: Real

Arc tangent (angle in degrees of the tangent) of the specified numeric value, included in the [-90, 90] interval (excluding bounds).

<Numeric value>: Integer or real

Numeric value (tangent) to use.

Remarks

How do you find an angle using its tangent?

In a right triangle, the tangent of an angle is equal to the ratio of the opposite side to the adjacent side. How do I find the angle? Simply use ArcTan.