If lim(xrarr2) (2x^2-4f(x))/(x-2) =m, wh...

If `lim_(xrarr2) (2x^2-4f(x))/(x-2) =m,` where `f(2)=2, f'(2)=1,` then `cosec 10^@-sqrt(3)sec10^@` is (A) 3m (B) 2m (C) m (D) none of these

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