For the circuit shown below, what are the following?

$($a$)$ the total impedance $($in $)$

$$

$($b$)$ the phase angle between the current and the emf $($in rad$)$

rad

$($c$)$ Write an expression for $i(t).($Use the following as necessary: $t.$ Assume $i(t)$ is in amps and $t$ is in seconds. Do not include units in your answer.$)$

i$($t$)=$