f(i)sin6^(@)sin42^(@)sin66^(@)sin78^(@)=(1)/(16)

Prove that: sin6^(@)sin42^(@)sin66^(@)sin78^(@)=1/16

Prove that: sin6^(@)sin42^(@)sin66^(@)sin78^(@)=1/16

Find sin6^(@)sin42^(@)sin66^(@)sin78^(@) .

Prove that sin6^(@)sin42^(@)sin66^(@)sin78^(@)=1//16 .

sin36^(@)sin72^(@)sin108^(@)sin144^(@)=(5)/(16)

Prove that sin 6^(@) sin 42^(@) sin 66^(@) sin 78^(@) = (1)/(16) .

Prove, sin6^(@).sin(42^(@)).sin(66^(@)).sin(78^(@))=(1)/(16) .

If sin6^(@)sin42^(@)sin54^(@)sin66^(@)sin78^(@)=(sqrt(a)+b)/(c),a,b,c in N where b&c are relatively prime,then value of (a+b+c) is

cos66^(@)+sin84^(@)=