Home
Class 11
MATHS
[" (1) The value of "S=sum(k=1)^(k)(sin(...

[" (1) The value of "S=sum_(k=1)^(k)(sin(2 pi k)/(7)-i cos(2 pi n)/(7))],[" is "],[[" a) "-1," b) "0],[" () "-i," d) "i]],[" (1) "pi(1+x+x^(2))^(n)=0+ax+1=x^(2)+n+2x^(2n)]

Promotional Banner

Similar Questions

Explore conceptually related problems

The value of sum_(k=1)^(10)((sin(2 pi k))/(11)-i(cos(2 pi k))/(11)) is

sum_(n=1)^(20)[sin((2n pi)/(21))-i cos((2n pi)/(21))]=

sum_ (k = 1) ^ (6) (sin, (2 pi k) / (7) -i cos, (2 pi k) / (7)) =?

sum_(m=1)^(32)m[sum_(k=1)^(6)sin2k(pi)/(7)-i cos2k(pi)/(7)]

prod_ (k = 1) ^ (6) (sin ((2k pi) / (7)) - i cos ((2k pi) / (7))) =

The value of 1+sum_(k=0)^(12){(cos((2k+1)pi))/(13)+i(sin((2k+1)pi))/(13)}

sum_(m=1)^(4n+1)[sum_(K=1)^(m-1){sin((2k pi)/(m))-i cos((2k pi)/(m))}^(m)]