Mirror Android Tablet to VGA monitor via Cable- NO DiSPLAY
If you have a computer hooked up to that monitor, and can hook up your phone via USB to the computer, I recommend Vysor. It's available as a chrome or windows app. Works great for screen mirroring, and the free version only uses USB

Note that there is a pro version of it, but basic functionality is free. You may also need USB debugging and ADB working