<|system|>
Compute $\arcsin \frac{1}{\sqrt{2}}.$  Express your answer in radians.</s>.
<|user|>
Can you answer based on context?
<|assistant|>
Since $\sin \frac{\pi}{4} = \frac{1}{\sqrt{2}},$ $\arcsin \frac{1}{\sqrt{2}} = \frac{\pi}{4}.$