Hi there ,

Your question is incomplete. You didn't mention what is to find out. But I am assuming you have to calculate frequency.

So it is given that i(t)= 14.14 sjn 377t

now I= Im sinwt= Imsin2pieft

Given 2pief= 377

f= 377/2pie= 60 Hz

I have written pie instead of its symbol but you have to use symbol.

Hope it helps you

Good Luck!