If 2 cos2θ + 11 sinθ - 7 = 0, then the value of sinθ, where [0 ≤ θ ≤ \(\frac{{\rm{\pi }}}{2}\)

If 2 cos²θ + 11 sinθ - 7 = 0, then the value of sinθ, where [0 ≤ θ ≤ \(\frac{{\rm{\pi }}}{2}\)

1). \( - \frac{1}{2}\)
2). 1/2
3). 5
4). \(\frac{1}{{\sqrt 2 }}\)

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