Question

3) (Valor 1,2) Calcule o valor numérico de tg 2π/3 (use os valores notáveis, redução ao 1° quadrante)
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Answer 1

$\large\boxed{\begin{array}{l}\sf tg\bigg(\dfrac{2\pi}{3}\bigg)=-tg\bigg(\pi-\dfrac{2\pi}{3}\bigg)\\\\\sf tg\bigg(\dfrac{2\pi}{3}\bigg)=-tg\bigg(\dfrac{\pi}{3}\bigg)\\\\\sf tg\bigg(\dfrac{2\pi}{3}\bigg)=-\sqrt{3}\end{array}}$