Since $\sin \left( -\frac{\pi}{6} \right) = -\frac{1}{2},$ $\arcsin \left( -\frac{1}{2} \right) = \boxed{-\frac{\pi}{6}}.$
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Compute $\arcsin \left( -\frac{1}{2} \right).$  Express your answer in radians.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-\frac{\pi}{6}
Compute $\arcsin \left( -\frac{1}{2} \right).$  Express your answer in radians.
test