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(MACKENZIE - 2018) Se \(cos(x)=\frac{2}{3}\), \(\frac{3\pi}{2}\leq x\leq2\pi\), então o valor de tg x é igual a
\(\frac{-\sqrt{5}}{3}\)
\(\frac{-\sqrt{5}}{2}\)
\(\frac{\sqrt{5}}{3}\)
\(\frac{\sqrt{5}}{2}\)
\(2\sqrt{5}\)