-\frac{\sqrt{3}}{2}
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find $\sin \frac{4 \pi}{3}.$
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-\frac{\sqrt{3}}{2}
Find $\sin \frac{4 \pi}{3}.$
train