PHP 忒聊 綴豖 ヶ輛 sinh (PHP 4 = 4.1.0) Description Returns the hyperbolic sine of arg, defined as (exp(arg) - exp(-arg))/2. See also sin(), asinh(), cos() and tan(). 綴豖 れ萸 ヶ輛 sin 奻珨撰 sqrt