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Problem
Problem
Solve
2
cos
2
θ
+
sin
θ
≤
2
2 \cos^2 \theta + \sin \theta \le 2
2
cos
2
θ
+
sin
θ
≤
2
, where
π
/
2
≤
θ
≤
3
π
/
2
‾
\underline{\pi/2 \le \theta \le 3\pi/2}
π
/2
≤
θ
≤
3
π
/2
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