How to taper a leg

Hi there. I’m trying to taper this 94 degree leg, so that it tapers from about 40mm down from the top.

I’ve included a red line to show where I want to end up.

Cut the leg from the top, with the split tool.
Then use the move rotate tool , pull the gizmo to the edges and rotate the side 6 deg.

This has been asked and answered. You might try the search tool.