Question

2. Calcule os valores de x e y :

Answer 1

Resposta:

a)

$\sf \cos{45^\circ} = \dfrac{Caceto \; Adjacente}{Hipotenusa}$

$\sf \dfrac{\sqrt{2} }{2} = \dfrac{x}{16}$

$\sf 2x = 16 \sqrt{2}$

$\sf x = \dfrac{16\sqrt{2} }{2}$

$\boxed {\sf x = 8\sqrt{2} }$

b)

$\sf\tan {60^\circ} = \dfrac{Caceto \; Oposto}{Cateto \; Adjacente}$

$\sf \sqrt{3} = \dfrac{y}{20}$

$\boxed { \sf y = 20 \sqrt3} }$

Explicação passo-a-passo: