Find the value `((1+sin((2pi)/9)+icos((2pi)/9))/(1+sin((2pi)/9)-icos((2pi)/9)))^3`

The value of sin((pi)/(18))+sin((pi)/(9))+sin((2pi)/(9))+sin((5pi)/(18)) is

Prove that ((1+sin.(pi)/(8)+icos.(pi)/(8))/(1+sin.(pi)/(8)-icos.(pi)/(8)))^(8)=-1

The value of sin(pi/18)+sin(pi/9)+sin((2pi)/9)+sin((5pi)/18) is

[(1+sin(pi//8)+icos(pi//8))/(1+sin(pi//8)-icospi//8)]^(-8//3)

The value of cos""(pi)/(9)cos""(2pi)/(9)cos""(3pi)/(9)cos""(4pi)/(9), is

The value of cos""(pi)/(9)cos""(2pi)/(9)cos""(3pi)/(9), is

The value of cos""(pi)/(9)cos""(2pi)/(9)cos""(3pi)/(9), is

The value of sum_(r=1)^(8)(sin((2rpi)/9)+icos((2rpi)/9)) , is

The expression [(1+sin(pi/8)+icos(pi/8))/(1+sin(pi/8)-icos(pi/8))]^8 is equal is

The principal argument of the complex number z = (1+ sin""(pi)/(3) + icos""(pi)/(3))/(1+sin""(pi)/(3) - i cos ""(pi)/(3)) is