Lösung 4.4:5c
Aus Online Mathematik Brückenkurs 1
For a fixed value of u, an equality of the form
is satisfied by two angles v in the unit circle,
This means that all angles v which satisfy the equality are
where n is an arbitrary integer.
Therefore, the equation
has the solutions
If we collect x onto one side, we end up with
where n is an arbitrary integer.