Compute $\arcsin 1.$  Express your answer in radians.
Since $\sin \frac{\pi}{2} = 1,$ $\arcsin 1 = \boxed{\frac{\pi}{2}}.$
Since $\sin \frac{\pi}{2} = 1,$ $\arcsin 1 = \boxed{\frac{\pi}{2}}.$
The final answer is $$\boxed{\frac{\pi}{2}}$$. I hope it is correct.