Question

qual valor de x no triângulo retângulo​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{\dfrac{12}{sen\:90\textdegree} = \dfrac{x}{sen\:30\textdegree}}$

$\mathsf{\dfrac{12}{1} = \dfrac{x}{\dfrac{1}{2}}}$

$\mathsf{2x = 12}$

$\mathsf{x = \dfrac{12}{2}}$

$\boxed{\boxed{\mathsf{x = 6}}}$

Answer 2

Explicação passo-a-passo:

$sen = \dfrac{co}{h}$

$cos = \dfrac{ca}{h}$

$tg = \dfrac{co}{ca}$

$cos60 {}^{0} = \dfrac{co}{h}$

$\dfrac{1}{2} = \dfrac{x}{12}$

Multiplique cruzado

$2 \times x = 12 \times 1$

$2x = 12$

$x = \dfrac{12}{2}$

$x = 6$