I have a Windows 10 PC with USB headset. I want to connect it to Android phone, so I can make calls using my computer's headset. Can I do so with usb, bluetooth, minijack or lan?
Yes, this is definitely possible - but not without special connective devices. You can actually use a variety off available connectors to extend comopatibility to the device, such as USB to 3.0 headphone adapter, and if your device will support the connection type, you could also use the MICROusb to USB 2\3.0 adapters.
Do a search online for one of the above mentioned devices, and learn more about them and your phones compatibility. You may also purchase of from almost any online electronic supply chains, as well as finding information regarding where to purchase one of the adapters locally.