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

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

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

Prove that: i) sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16 ii) sin10^(@)sin50^(@)sin60^(@)sin70^(@)=sqrt(3)/16 iii) sin20^(@)sin40^(@)sin80^(@)=sqrt(3)/8

Prove that: sin20^(@)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

Prove that: sin20^(0)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

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

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

Prove that: sin12^(@)sin48^(@)sin54^(@)=1/8

Prove that: sin10^(0)sin30^(0)sin50^(@)sin70^(@)=(1)/(16)