Supposedly easy arcsine problem

[hypermonkey2]

Homework Statement

find x if sin(x)=1/5

Homework Equations

x=arcsin(1/5)= ??something in closed form maybe??

The Attempt at a Solution

This actually isn't my homework. A student I am tutoring in differential calculus came to me with this problem and I am convinced it is a typo. Just for certainty, is there a closed form for this? I started messing around with complex numbers and series... so i thought it might be time to ask here.
Thanks!

 

[hypermonkey2]

so i just want to confirm that it is not really a fair and square Cal 1 problem...

 

[Dick]

I doubt you are going to find a neater form for that. It's arcsin(1/5).