Find :cosπ65cos2π65cos4π65cos8π65cos16π65cos32π65.
cos π65 cos 2π65 cos 4π65 cos 8π65 cos 16π65 cos 32π65=164
The value of cos π65 cos 2π65 cos 4π65 cos 8π65 cos 16π65 cos 32π65 is
1−i1+i is equal to