September 2018 2 56 Report
Tolong dijawab dengan caranya,,
Himpunan penyelesaian dari persamaan cos 2x + 3 sin x + 1 = 0, untuk 0 < x < 2π adalah.....
A. {  \frac{8}{6} π,  \frac{10}{6} π }
B. {  \frac{7}{6} π,  \frac{11}{6} π }
C.  \frac{5}{6} π,  \frac{11}{6} π }
D. {  \frac{2}{6} π,  \frac{4}{6} π }
E.{  \frac{1}{6} π,  \frac{5}{6} π }

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