Step 1 :
\From the result of http://www.mathskey.com/question2answer/31982.
\\
\
Voltage in
is
.
Find current across capacitor.
\Observe the circuit,
.
Current across capacitor :
.
Substite
and
in current across capacitor
.

Step 2 :
\Voltage in
is
.
Substitute
and
in current across capacitor
.

Therefore the current across capacitor is
.
Solution :
\
.