Returns the arctangent of a number. The arctangent is the angle whose tangent is number.
See also Tan, Sin, Cos, and Pi.
Atn(number)
Tangent of the angle you want.
The range of the result is -/2 to /2 radians. To convert degrees to radians, multiply degrees by /180. To convert radians to degrees, multiply radians by 180/.
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