Complex NumbersHard
Question
The expression 
when simplified reduces to :
when simplified reduces to :Options
A.zero
B.sin n α
C.2 cos n α
D.none
More Complex Numbers Questions
Points z1 & z2 are adjacent vertices of a regular octagon. The vertex z3 adjacent to z2 (z3 ≠ z1) is represented b...The comples numbers sin x + i cos2x and cos x - i sin 2x are conjugate to each other, form...If z (≠ 2) be a complex numbers such that log1/2 | z − 2| > log1/2 |z |, then z satisfies -...If z (≠ - 1) is a complex number such that is purely imaginary, then |z| is equal to...If z1, z2 are complex numbers such that |z1 + z2 |2 = |z1 |2 + |z2 |2, then z1 / z2 is-...