can I use smartTV as MAC monitor?

I have a MAC 2009 27" running Sierra.
I also have a large SONY smartTV in the same room.

I would like to do 2 things:
1. use the TV as a mirrored or extended display
2. stream from my MAC to the TV


Is this possible, and any tricks to doing it?

Thx

Easy to connect as a second display via cable. Streaming, very difficult to do if you mean via WiFi.
I have a similar setup. A MacBook Pro and a Sony Bravia smart TV.
I can watch live sport via internet and connect the MBP to the TV via a hdmi cable for a big display but it’s easier with an iPhone. I use a hdmi cable and a lightening bolt to hdmi adaptor to connect the iPhone.
You can stream via WiFi to the Sony with an android phone but no similar app is available for iOS.

No tricks necessary, most SmartTV's have a HDMI input, so plug a cable in and your Mac will recognize the monitor and allow you to use it as a second display (mirror or extended) as you see fit.

From a streaming functionality, since it's a second display you can just move the window over to it or you can go down the DLNA route.