Answer
$5$
Work Step by Step
We need to compute $\csc (\theta)$.
We are given that $\sin \theta=\dfrac{1}{5}$
Since, $\csc (\theta) =\dfrac{1}{\sin (\theta)}$
Thus, we have: $\csc (\theta) =\dfrac{1}{\sin (\theta)}
\\=\dfrac{1}{\frac{1}{5}} \\=5$
