ACOSH(number)

Returns the hyperbolic arc-cosine of a number.

numberThe number you want the inverse hyperbolic cosine of.

* The hyperbolic arc-cosine (or inverse hyperbolic cosine function) of an angle is the inverse of the COSH function.
* The "number" is the angle in radians.
* If "number" < 1, then #NUM! is returned.
* If "number" is not numeric, then #VALUE! is returned.
* For a working example refer to the Trigonometry page.
* For the Microsoft documentation refer to support.office.com.

 A
1=ACOSH(1) = 0
2=ACOSH(COSH(1)) = 1
3=ACOSH(COSH(10)) = 10
4=ACOSH(45) = 4.5
5=ACOSH(ACOS(0.5)) = 0.306
6=ACOSH(COSH(355)) = 355
7=ACOSH(COSH(356)) = #NUM!
8=ACOSH(COSH(500)) = #NUM!
9=ACOSH(-1) = #NUM!
10=ACOSH("some text") = #VALUE!

1 - What is the inverse hyperbolic cosine of 1 radian.
2 - This function is the inverse of the hyperbolic cosine function.
3 - This function is the inverse of the hyperbolic cosine function.
4 - What is the inverse hyperbolic cosine of 4.5.


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