Find $\csc (-120^\circ).$
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find $\csc (-120^\circ).$
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-\frac{2 \sqrt{3}}{3}
Find $\csc (-120^\circ).$
train