Documentation/How Tos/Calc: ACOSH function

ACOSH

Returns the inverse hyperbolic cosine of a number.

Syntax:

ACOSH(number)

returns the inverse hyperbolic cosine of number, in other words the number whose hyperbolic cosine is number.

number must be greater than or equal to 1.

Example:

ACOSH(1)

returns 0.

ACOSH(COSH(4))

returns 4.

See also:

ASINH, ATANH, ACOTH

COSH, SINH, TANH, COTH

Mathematical functions