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" 17.Prove that "sin6^(@)sin42^(@)sin66^...

" 17.Prove that "sin6^(@)sin42^(@)sin66^(@)sin78^(@)=(-)/(16)

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

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

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

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

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

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

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

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

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