Question

Calcule X e Y quando houver nos triângulas a seguir usando as razões trigonométricas

Answer 1

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$\sf{cos(60^{\circ})=\dfrac{x}{10}}\\\sf{\dfrac{1}{\diagdown\!\!\!2}=\dfrac{x}{\diagdown\!\!\!\!\!\!10}_5}\\\sf{x=5}\\\sf{tg(45^{\circ}) =\dfrac{5\sqrt{3}}{y}}\\\sf{1=\dfrac{5\sqrt{3}}{y}}\\\sf{y=5\sqrt{3}}$