व्यंजक sum(theta = 0)^(8) (1)/(1 + tan^(...

व्यंजक `sum_(theta = 0)^(8) (1)/(1 + tan^(3) (10 theta)^(@))` का मान है : (i) 5 (ii) `(21)/(4)` (iii) `(14)/(3)` (iv) `(9)/(2)`

`(21)/(4)`

`(14)/(3)`

`(9)/(2)`

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