In Inkscape I first typed text, created a circle, then made two lines from the center.
It looks like this now:

![image 1](https://i.stack.imgur.com/DM2dH.png)

Now, I want it to look like this with the piece cut off, which I made before: 

![image 2](https://i.stack.imgur.com/8zqnH.png)

I can't make it work. Every path boolean operation is not working.
How do I cut circle like a pie?