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

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

The value of sin""(15pi)/(32)sin""(7pi)/(16)sin""(3pi)/(8), is

The value of sin""(15pi)/(32)sin""(7pi)/(16)sin""(3pi)/(8), 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