Let Sn = cos ((n pi )/( 10)) , n = 1,...

Let ` S_n = cos ((n pi )/( 10)) , n = 1,2,3,……` then the value of `( s_1 s_2 ……s_(10))/( s_1 + s_2 +…….. +s_(10))` is equal to

`(1)/( sqrt(2))`

` (sqrt(3))/(2)`

`2 sqrt(2)`

`0`

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