which cable can i use to connect my laptop to my tv?
I have a Panasonic TH-42PE7U
What laptop are you trying to connect?
Based on the television, you need to get an HDMI cable to connect to the TV. The other side of the cable depends on the laptop's available connection. If it is Apple, then it made be miniDisplay Port. If it is another type, then perhaps you may need a USB connection.