Get the angle from the Node

Hi everybody,
Maybe anybody can help me.
I am using the dwm 1002 Node an I want to get the angle the tag stands to the node.
I already managed to get the Phase difference via serial port. But how is the Formula to calculate the phase difference to degree.
I´ve read about
1/0.95* arcsin(P/Pi) is this right?
Thanks in Advance


Yes that is correct if you still looking for an answer