NCERT Class 12 TAMIL - Ex 7.3 Q23 Integral (sin^2 x - cos ^2 x)/(sin x cos x) dx equals to

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NCERT Class 12 TAMIL - Ex 7.3 Q23 Integral (sin^2 x - cos ^2 x)/(sin x cos x) dx equals to
(A) tan x + cot x + C
(B) tan x + cosec x + C
(C) -tan x + cot x + C
(D) tan x + sec x + C