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

sin(pi/18)*sin(5pi/18)*sin(7pi/18)

sin(pi/18)sin(5 pi/18)sin(7 pi/18)

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/(14))sin((3pi)/14)sin((5pi)/(14))sin((7pi)/(14))sin((9pi)/(14))sin((11pi)/(14))sin((13pi)/(14)) is equal to___________

The value of sin\ pi/16 sin\ (3pi)/16 sin\ (5pi)/16 sin\ (7pi)/16 is