Solve the following problem:
Find the steady-state solution for the differential equation
(dI/dt)+12I= 65cos(5t-30°)+ 45sin(9t +30°)
1. I(t) = 5 cost(t — 52.62° ) + 3 sin(t — 6.87° )
2. I(t) = 5 cos(5t — 52.62°) + 3sin(9t — 6.87° )
3. I(t) = 5 cos(5t + 52.62°) + 3 sin(9t + 6.87° )
4. I(t) = 5 cos(5t — 52.62°) — 3 cos(9t — 6.87° )