Investment Studio > Expressions > Functions > Math & Trig > ACOSH

float acosh(float argument)

Returns the inverse hyperbolic cosine of the argument. The argument must be >= 1.

The inverse hyperbolic cosine is the number such that cosh(number) = argument.

Example

=acosh(10)

returns 2.99322284612638. You can verify that

=cosh(2.99322284612638)

is 9.99999999999999 (= 10 in float precision).

See also asinh, atanh, cosh.