1.

If √1+cosx+√1−cosx√1+cosx=√1−cosx=cot(a+x2),xϵ(π,2π) then a___

Answer»

If √1+cosx+√1−cosx√1+cosx=√1−cosx=cot(a+x2),xϵ(π,2π) then a___





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