The expression is .
Find the values of and
for which the expression is true. \ \
For a complex number ,where
represents measure of an angle. \ \
Therefore and
represents the measure of an angles. \ \
For the expression to be satisfy, or
and
should differ by integer multiples of
.
Therefore, the expression is true for the values of
and
where they differ by integer multiples of
.
The expression is true for the values of
and
where they differ by integer multiples of
.