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The most general value of x satisfying t...

The most general value of `x` satisfying the equation `tan x=(1+sin\ pi/5 -cos\ (2pi)/5)/(cos\ pi/5 + sin\ (2pi)/5)` is (i)`npi+pi/5` (ii)`npi-pi/5` (iii)`2npi+pi/5` (iv) `2npi-pi/5`

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