Trigonometric EquationHard
Question
The general solution of the equation 7 cos2 x + sin x cos x − 3 = 0 is given by-
Options
A.nπ + 
(n ∈ I)
(n ∈ I) B.nπ − 
(n ∈ I)
(n ∈ I) C.nπ + tan-1 
(n ∈ I)
(n ∈ I) D.nπ − 
kπ + tan-1 (n ∈ I)
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