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Solve the Equation in the Interval [0,2π)[ 0,2 \pi ) 2cos2x+sinx=12 \cos ^ { 2 } x + \sin x = 1

Question 11

Multiple Choice

Solve the equation in the interval [0,2π) [ 0,2 \pi ) . 2cos2x+sinx=12 \cos ^ { 2 } x + \sin x = 1


A) π6,π2\frac { \pi } { 6 } , \frac { \pi } { 2 }

B) π6,π3\frac { \pi } { 6 } , \frac { \pi } { 3 }

C) π2,7π6\frac { \pi } { 2 } , \frac { 7 \pi } { 6 }

D) π6,11π6\frac { \pi } { 6 } , \frac { 11 \pi } { 6 }

E) none

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