Given the input of 1, the function returns the value 1.543080635.
Here is a table that shows some points on the unit hyperbola formed by COSH and SINH.
As the value of the hyperbolic angle gets larger, the horizontal component diverges to infinity.
This is different from thecircular cosine function, which is periodic and repeats values.
Related functions
SINH Function
The Excel SINH function returns the hyperbolic sine of a number.
TANH Function
The Excel TANH function returns the hyperbolic tangent of a number.
ACOSH Function
The Excel ACOSH function returns the inverse hyperbolic cosine of a number.