1.

The solution(s) of the equation 9cos12x+cos22x+1=6cos6x cos 2x+6cos6x−2cos 2x is/are (n ∈ I).

Answer»

The solution(s) of the equation 9cos12x+cos22x+1=6cos6x cos 2x+6cos6x2cos 2x is/are (n I).



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