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" (x) "sin6^(@)sin42^(@)sin66^(@)sin78^(...

" (x) "sin6^(@)sin42^(@)sin66^(@)sin78^(@)=(1)/(16)

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

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

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

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

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

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

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

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

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