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{math.tan.inverse(Float $number)}
{math.tan.inverse()} Returns the arc tangent of number in radians.
{math.tan.inverse()} is the inverse function of {math.tan()}, which means that $a=={math.tan(math.tan.inverse($a))} for every value of a that is within {math.tan.inverse()} range.
Returns the arc tangent of
numberin radians as afloat.
https://www.php.net/manual/en/function.atan.php
Last modified: 2021-06-06
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