# Sin Function

Returns a **Double** specifying the sine of an angle.
**Syntax**
**Sin(***number***)**
The required *number*argument is aDouble or any validnumeric expression that expresses an angle in radians.
**Remarks**
The **Sin** function takes an angle and returns the ratio of two sides of a right triangle. The ratio is the length of the side opposite the angle divided by the length of the hypotenuse.
The result lies in the range -1 to 1.
To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.

## Example

This example uses the **Sin** function to return the sine of an angle.

```
Dim MyAngle, MyCosecant
MyAngle = 1.3 ' Define angle in radians.
MyCosecant = 1 / Sin(MyAngle) ' Calculate cosecant.
```