To find the sine of a number (in radians) with VBA, we can use the VBA **Sin()** function.

`Sin(x)`

In VBA, we can easily use trigonometric functions from the collection of VBA math functions. These VBA math functions allow us to perform trigonometry easily.

To find the sine of a number, in radians, we use the VBA **Sin()** function.

Below is the VBA syntax to find the sine of a number.

`Sin(x)`

The input to the **Sin()** function must be a double. The return value will be a double between -1 and 1.

```
Debug.Print Sin(WorksheetFunction.Pi/3)
Debug.Print Sin(0)
Debug.Print Sin(WorksheetFunction.Pi/2)
'Output:
0.8660254037844386
0.0
1.0
```

## Converting Degrees to Radians for Input into Sin()

The **Sin()** function takes a number in radians as input. If your data is in degrees, you will need to convert the values to radians.

To convert degrees to radians, we can use the Worksheet Function Radians() to convert the value to radians and then pass it to the **Sin()** function.

```
Debug.Print Sin(WorksheetFunction.Radians(60))
Debug.Print Sin(WorksheetFunction.Radians(0))
Debug.Print Sin(WorksheetFunction.Radians(90))
'Output:
0.8660254037844386
0.0
1.0
```

## Finding the Inverse Sine of a Number in VBA

With VBA, we can also find the inverses of the common trigonometric functions. The Asin() Worksheet function allows us to find the inverse of the sine of a number.

Below, we show that if we pass a number to **Sin()** and then call the VBA **Asin()** worksheet function, we get back the same number.

```
Debug.Print WorksheetFunction.Asin(Sin(WorksheetFunction.Pi/3))
Debug.Print WorksheetFunction.Pi/3
'Output:
1.0471975511965976
1.0471975511965976
```

## Finding the Cosecant of a Number in VBA

To find the cosecant of a number, we can divide 1 by the sine of the number.

We can find the cosecant of a number easily with the VBA **Sin()** function. You can see how to find the cosecant of a number in the following VBA code.

```
Debug.Print 1/Sin(WorksheetFunction.Pi/3)
'Output:
1.1547005383792517
```

Hopefully this article has been beneficial for you to understand how to use the **Sin()** function in VBA to find the sine of a number.