`cospi/14+cos(3pi)/14+cos(5pi)/14=kcotpi/14`

cos(pi/14)+cos((3pi)/14)+cos((5pi)/14)=kcot(pi/14) then k is equal to

cos(pi/14) + cos ((3pi)/14) + cos((5pi)/14) =

cos((pi)/(14))+cos((3 pi)/(14))+cos((5 pi)/(14))=k cot((pi)/(14)) then k is equal to

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

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

The value of sinpi/14 sin(3pi)/14 sin(5pi)/14 is equal to:

Prove that cos(2pi)/(15)cos(4pi)/(15)cos(8pi)/(15)cos(14pi)/(15)=1/(16)

Prove that cos(2pi)/(15)cos(4pi)/(15)cos(8pi)/(15)cos(14pi)/(15)=1/(16)

Find the value of cospi/7+cos(2pi)/7+cos(3pi)/7+cos(4pi)/7+cos(5pi)/7+cos(6pi)/+cos(7pi)/7

cospi/5+cos(2pi)/5+cos(6pi)/5+cos(7pi)/5=0