acosh

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

acosh — Inverse hyperbolic cosine

Description

acosh(float $num): float

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

Parameters

num: The value to process

Return Values

The inverse hyperbolic cosine of num

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