In a right triangle, the angle $ heta$ measures $30$ degrees. The length of the side opposite to angle $ heta$ is $x$ units. If the hypotenuse of the triangle measures $8$ units, what is the length of side $x$?
Use the sine function to find the length of the side opposite angle $ heta$ using the formula:
$$ ext{sine}( heta) = rac{ ext{opposite}}{ ext{hypotenuse}}$$
where $ heta$ is the angle in degrees.