# The ATAN function

### Author Topic: The ATAN function  (Read 7968 times)

#### beingchinmay

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##### The ATAN function
« on: 10-17-2016, 05:11:01 »
The ATAN function returns the inverse tangent. The specification for the ATAN function is:

Code:
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where the number n must be between −infinity and infinity, and the value returned by ATAN is between −pi/2and pi/2.

#### richardmsmith

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##### Re: The ATAN function
« Reply #1 on: 08-29-2018, 02:36:36 »
The Atan function is a Number Request that calculates the value (in radians) of the angle whose tangent equals a specified number.
The arctangent function is the inverse function of the tangent function and calculates the angle for a given tangent x.

#### brookeroberts7

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##### Re: The ATAN function
« Reply #2 on: 08-28-2020, 01:42:43 »
The Atan function is a Number Request that calculates the value (in radians) of the angle whose tangent equals a specified number (the inverse of the Tan function). In the diagram below, the arc tangent of b/a is X. The units of X are radians. Arc tangent is sometimes written tan-1.

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