Evaluate:
(i)
(ii)
(iii) .
Since i =
(i) L.H.S. =
Since it is of the form = 1 so the solution would be 1
(ii) L.H.S.=
Since it is of the form of = i so the solution would be simply i.
(iii) L.H.S =
Since it is of the form so the solution would be -1