The acosh()
method computes the hyperbolic arc-cosine of the specified number and returns it.
Example
// hyperbolic arc-cosine of 5
let number = Math.acosh(5);
console.log(number);
// Output: 2.2924316695611777
acosh() syntax
The syntax of the Math.acosh()
method is:
Math.acosh(number)
Here, acosh()
is a static method. Hence, we are accessing the method using the class name, Math
.
acosh() Parameter
The acosh()
method takes a single parameter:
number
- a positive value whose hyperbolic arc-cosine is to be calculated
acosh() Return Value
The acosh()
method returns:
- hyperbolic arc-cosine of the given positive argument
number
- NaN (Not a Number) for zero, negative and non-numeric argument
Example 1: JavaScript Math.acosh() with Positive Numbers
// hyperbolic arc-cosine of an integer
let result1 = Math.acosh(32);
console.log(result1);
// hyperbolic arc-cosine of a floating-point number
let result2 = Math.acosh(4.5);
console.log(result2);
// Output:
// 4.158638853279167
// 2.1846437916051085
In the above example, we have used the Math.acosh()
method with
32
(integer value) - results in 4.1586388532791674.5
(floating-point value) - result in 2.1846437916051085
Example 2: Math.acosh() with Zero and Negative Numbers
// hyperbolic arc-cosine of a negative number
let result1 = Math.acosh(-12.5);
console.log(result1);
// Output: NaN
// hyperbolic arc-cosine of zero
let result2 = Math.acosh(0);
console.log(result2);
// Output: NaN
In the above example, we have used the acosh()
method with a negative number and zero. For both values, we get NaN as output.
Note: We can only use the acosh()
method with positive numbers.
Example 3: Math.acosh() with Non-Numeric argument
let string ="Harry";
// acosh() with a string argument
let value = Math.acosh(string);
console.log(value);
// Output: NaN
In the above example, we have used the acosh()
method with the string "Harry"
. Hence, we get NaN as output.
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