1.

If sin2 x tan x + cos2 x cot x - sin 2x = 1 + tan x + cot x, x ϵ (0, π), then x

A. \(\frac {3\pi}{12}, \frac {5\pi}{12}\)
B. \(\frac {5\pi}{12}, \frac {7\pi}{12}\)
C. \(\frac {7\pi}{12}, \frac {11\pi}{12}\)
D. \(\frac {7\pi}{12}, \frac {9\pi}{12}\)
Answer» D. \(\frac {7\pi}{12}, \frac {9\pi}{12}\)


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