how to solve this?

f(x) = lim 0→x minmaxƩ (2tan(x) / 3sin(x) ) * (1.2)cΦ [min = (|cos(x)| = 1) | (|sin(x)| = 1) + π/12 ), max = (|cos(x)| = 1) | (|sin(x)| = 1) + 5π/12 ]​