There are a number of ways you can stream your workouts to your TV:
Using a wire to connect
What you will need: A HDMI cable
Set up: Nearly all smartphones and tablets can plug into an HDMI-ready TV. One cable end plugs into your phone or tablet while the other plugs into the HDMI port on your TV. Once connected, whatever you display on your phone will also show up on your TV.
What you will need: Apple TV and an iOS device - compatible MacBook, iPad or iPhone
Set up: Ensure both devices are on the same Wi-Fi network. If you haven’t used AirPlay in a while, its best to resync both devices. On your iOS device, swipe up from the bottom of your screen to access Control Center. For MacBooks, it is the airplay button in the control bar. Select AirPlay and select the name of the device you want to stream the workout to.
What you will need: Firestick or similar device - mobile, tablet.
Set up: You can use the mirror or screen share function on your mobile to connect to a mirror/screen share device such as a firestick or roku box