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acosh

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

acosh Inverse hyperbolic cossine

Description

acosh ( float $num ): float

Returns the inverse hyperbolic cossine of num , i.e. the value whose hyperbolic cossine is num .

Parameters

num

The value to processs

Return Values

The inverse hyperbolic cossine of num

See Also

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