1.

If the equation cos^(2)((pi)/4(sinx+sqrt(2)cos^(2)x))-tan^(2)(x+(pi)/4tan^(2)x)=1 then x=

Answer»

`2kpi-(pi)/4, k in Z`
`2kpi+(pi)/3, k in Z`
`2kpi +(pi)/4, k in Z`
`2K pi +(pi)/4, k INZ`

ANSWER :A


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