Answer
$\frac{6}{ tan \theta}$
Work Step by Step
We use trigonometry to solve the problem:
$$ tan \theta = \frac{6}{BC} \\ BC=\frac{6}{ tan \theta}$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.