" If "x_(n)=cos(pi/4^(n))+i sin(pi/4^(x))_(" then ")x_(1)x_(2)pi_(3)-x=

If x_(n)=cos((pi)/(4^(n)))+i sin((pi)/(4^(n))), then x_(1)*x_(2),x_(3)...............oo

If x_(n)=cos((pi)/(4^(n)))+i sin ((pi)/(4^(n))) , then x_(1), x_(2), x_(3)....oo is equal to

If x_(n)=cos(pi)/(2^(n))+i sin(pi)/(2^(n)), prove that x_(1)x_(2)x_(3)x_(oo)=-1

If x_(n)=cos(pi/3^(n))+isin((pi)/(3^(n))) , then x_(1),x_(2),x_(3),………………..x_(infty) is equal to

cos((3pi)/4+x)-sin(pi/4-x)=?

Statement-I : If x_n=cos(pi//2^n)+isin (pi//2^n) then x_1.x_2.x_3…..=-1 Statement-II : x_n=cos(pi//4^n)+isin(pi//4^n) then x_1.x_2.x_3…..infty=-1