Answer
$\dfrac{1}{2}$
Work Step by Step
$30^o$ is a special angle whose sine value is $\dfrac{1}{2}$.
RECALL:
$\csc{\theta} = \dfrac{1}{\sin{\theta}}$
Thus,
$\dfrac{1}{\csc{30^o}}
\\=\dfrac{1}{\frac{1}{\sin{30^o}}}
\\=1 \cdot \dfrac{\sin{30^o}}{1}
\\=\sin{30^o}
\\=\dfrac{1}{2}$