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sin 10^(circ) . sin 30^(circ) . sin 50^(...

`sin 10^(circ) . sin 30^(circ) . sin 50^(circ) . sin 70^(circ)=`

A

`(1)/(16)`

B

`(1)/(32)`

C

`(1)/(64)`

D

`(1)/(52)`

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