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sin 20^(@) sin 40^(@) sin 60^(@) sin 8...

sin `20^(@) ` sin `40^(@)` sin `60^(@)` sin `80^(@) =(3)/(16)`

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sin 40^(@) - sin 80^(@)+ sin 160^(@) =

Prove that sin 20 ^(@) sin40^(@) sin 60^(@) sin 80^(@) = 3/16

sin 20^(@) sin 40^(@) sin 60^(@) sin 80^(@) = .............. A) (-3)/(16) B) (5)/(16) C) (3)/(16) D) (-5)/(16)

Prove that : sin 10^(@) + sin 20^(@) + sin 40^(@) + sin 50^(@) = sin 70^(@) + sin 80^(@).

sin 10^(@) + sin 20^(@) + sin 40^(@) + sin 50^(@) - sin 70^(@) - sin 80^(@) =

For A in R , prove that sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16

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