You can mirror your iPad's screen to a TV using AirPlay:
Open Control Center on your iPad (this is when you swipe down from the corner or the bottom and it shows all the widgets, like the calculator, flashlight, etc.)
Tap Screen Mirroring (see icon above)
Select your TV as the playback destination
If a passcode appears on your TV, enter it on your iPad
To stop mirroring, you can open Control Center, tap Screen Mirroring, and then tap Stop Mirroring.
To AirPlay from a browser on an iPad to a TV, you can use AirPlay to stream content from your iPad to an AirPlay-enabled TV or Apple TV:
Make sure your iPad and TV are connected to the same Wi-Fi network
Open the content you want to stream
Select the AirPlay icon in the video controls
Choose your TV as the playback destination
If a passcode appears on your TV, enter it on your iPad