`alpha=e^((2pi)/5i)t h e n1+alpha+alpha^2+alpha^3+alpha^4+2alpha^5=`

If alpha = cos((8pi)/11)+i sin ((8pi)/11) then Re(alpha + alpha^2+alpha^3+alpha^4+alpha^5) is

If alpha = cos((8pi)/11)+i sin ((8pi)/11) then Re(alpha + alpha^2+alpha^3+alpha^4+alpha^5) is

If alpha=e^((i8 pi)/(11)), then find Re(alpha+alpha^(2)+alpha^(3)+alpha^(4)+alpha^(5))

If alpha=cos((8 pi)/(11))+i sin((8 pi)/(11)) then Re(alpha+alpha^(2)+alpha^(3)+alpha^(4)+alpha^(5)) is

If alpha=cos((8pi)/11+isin((8pi)/11 then Re(alpha+alpha^2+alpha^3+alpha^4+alpha^5) is

" If "alpha=(2 pi)/(7)" ,and "tan alpha tan2 alpha+tan2 alpha tan4 alpha+tan4 alpha tan alpha=K" .Then "3k^(2)+4k+5=" ."

If alpha=cos ((2pi)/5)+isin((2pi)/5) , then find the value of alpha+alpha^2+alpha^3+alpha^4

Let alpha=(pi)/(5) and A,=[[cos alpha,sin alpha-sin alpha,cos alpha]] then B=A^(4)-A^(3)+A^(2)-A is