Question

7) Determine o valor de x.

Answer 1

Explicação passo-a-passo:

$\sf cos~60^{\circ}=\dfrac{cateto~adjacente}{hipotenusa}$

$\sf \dfrac{1}{2}=\dfrac{x}{4}$

$\sf 2x=4\cdot1$

$\sf 2x=4$

$\sf x=\dfrac{4}{2}$

$\sf x=2$