the value of `sin(pi/7)+sin((2pi)/7)+sin((3pi)/7)` is

The value of 2 sin (pi/8) sin((2pi)/8) sin((3pi)/8) sin ((5pi)/8) sin ((6pi)/8) sin((7pi)/8) is :

the value of sin((pi)/(7))+sin((2 pi)/(7))+sin((3 pi)/(7)) is

Find the value of sin((pi)/(7))sin((2 pi)/(7))sin((4 pi)/(7))=

The value of sin (pi)/(7)+sin (2 pi)/(7)+sin (3 pi)/(7) is

let cos(pi/7),cos((3pi)/7),cos((5pi)/7), the roots of equation 8x^3 - 4x^2 - 4x +1=0 then the value of sin(pi/14),sin((3pi)/14),sin((5pi)/14)

The value of sin(pi/14)sin((3pi)/14)sin((5pi)/14)sin((7pi)/14)sin((9pi)/14)sin((11pi)/14)sin((13pi)/14) is

The value of : sin""(pi/7).sin""((3pi)/14).sin""((5pi)/14).sin""((7pi)/14) is :

The value of sin""(2pi)/(7)+sin""(4pi)/(7)+sin""(8pi)/(7), is

The value of sin""(2pi)/(7)+sin""(4pi)/(7)+sin""(8pi)/(7), is

Show that: sin((2pi)/7)+ sin ((4pi)/7) + sin( (8pi)/7) = sqrt7/2 .