In structured query language `SQL`, we have a trigonometric function, `SINH()`. **`SINH()`** calculates the hyperbolic sine of a number. This method accepts a `Double-Precision` value as a parameter and returns the hyperbolic sine (floating-point value). The return value will be an angle in *radians*.

Figure 1 shows the mathematical representation of the hyperbolic sine method. Figure 2 represents the graphical behavior of `SINH()` between the interval -4 to +4.

#   
#  Syntax
```
SINH(α) //α should be Radian angle
```
> To convert degrees to radians, use this formula: 
>
>*Radian angle* = $\frac{x\pi}{180}$, where $\pi$ = 3.14 and $x$ is the degree angle.


#   
## Parameters
The `SINH()` method requires a double-precision floating-point value as an argument.
> Usually, this double-precision floating-point number takes `64-bits` in computer memory.
##  
## Return value
`SINH()` returns the hyperbolic sine (floating-point number) of the value that is sent as the parameter.

1. On passing `NULL` as an argument, `SINH()` returns `NULL`.
2. On passing `0` as an argument, `SINH()` returns `0`.

#   
## Example
In the following example, we demonstrate how to use `SINH(α)` in `SQL`. We have multiple scenarios and their behavior for different values.

-- Example showing how to use SINH(α)

/*Positive number*/
SELECT SINH(4); -- return 27.289917197128

/*Negative number*/
select SINH(-1); -- return -1.175201193644

/*Fractional number*/
select SINH(0.6);  -- return 0.636653582148


What is SINH( ) in SQL?

Syntax

Parameters

Return value

Example