`(sin((2 pi)/(7))+sin((4 pi)/(7)) -sin((6 pi)/(7)))/(sin((pi)/(7))sin((3 pi)/(7))sin((5 pi)/(7)))` is equal to

sin ((pi) / (7)) sin ((2 pi) / (7)) sin ((3 pi) / (7))

sin((7 pi)/(4))*cos((7 pi)/(6))*tan((3 pi)/(4))*cot((11 pi)/(6)) is equal to

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

If A=sin((2 pi)/(7))+sin((4 pi)/(7))+sin((8 pi)/(7)) and B=cos((2 pi)/(7))+cos((4 pi)/(7))+cos((8 pi)/(7)) then sqrt(A^(2)+B^(2)) is equal to

(sin ((3 pi) / (7)) cos ((4 pi) / (7))) / (sin ((pi) / (7)))

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

cos((pi)/(7))*cos(2(pi)/(7))*cos(10(pi)/(7))-sin((pi)/(14))*sin(3( pi)/(14))*sin(5(pi)/(14)) Find value.

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

Prove that: sin((pi)/(14))sin((3 pi)/(14))sin((5 pi)/(14))sin((7 pi)/(14))sin((9 pi)/(14))sin((11 pi)/(14))sin((13 pi)/(14))=(1)/(64)