PostgreSQL ACOSH() Function

The PostgreSQL ACOSH() function returns inverse hyperbolic cosine of a value. The inverse hyperbolic cosine of x is defined as:

If the argument is less than 1, then this function returns an error.

Syntax

ACOSH(x)

Parameters

Return Value

Returns the inverse hyperbolic cosine of the value.

Example 1:

The example below shows the usage of ACOSH() function.

SELECT ACOSH(1);
Result: 0

SELECT ACOSH(2);
Result: 1.3169578969248166

SELECT ACOSH(3);
Result: 1.762747174039086

SELECT ACOSH(4);
Result: 2.0634370688955608

SELECT ACOSH(5);
Result: 2.2924316695611777

Example 2:

Consider a database table called Sample with the following records:

The statement given below can be used to calculate the inverse hyperbolic cosine of records of column x.

SELECT *, ACOSH(x) AS ACOSH_Value FROM Sample;

This will produce the result as shown below: