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Grade: 11
        
If 2cos^2θ+sinθ≤2, then exhaustive set of the inequality in θ∈[π/2,3π/2]. Find the required values of theta.
6 days ago

Answers : (1)

Arun
15947 Points
							
Dear student
 
2 – 2 sin2 x + sin x – 2
 
2 sin2x – sinx >=0
 
2 sin x (sinx – 1/2) >=0
 
hence sin x belongs to [- 1, 1/2] U [0, 1]
 
now you can find angles
6 days ago
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