Question

No triângulo retângulo, determinar o valor de sen A, cos A e tg A. Marcar a alternativa correta:
opções e resposta:
a)sen A= 5/6 ; cos A = 17/5 ; tg A = 17/30
b)sen A= 5/6 ; cos A = 6/5 ; tg A= 17/25
c)sen A = 17/30 ; cos A = 5/6 ; tg A= 17/25
d)sen A = 17/30 ; cos A =17/25 ; tg A = 5/6

Answer 1

Resposta:

Explicação passo-a-passo:

$senA=\dfrac{CatetoOposto}{Hipotenusa}=\dfrac{\dfrac{17}{5} }{6}=\dfrac{17}{5}.\dfrac{1}{6}=\dfrac{17}{30}\\\\\\cosA=\dfrac{CatetoAdjacente}{Hipotenusa}=\dfrac{5}{6}\\\\\\tgA=\dfrac{CatetoOposto}{CatetoAdjacente}=\dfrac{\dfrac{17}{5}}{5}=\dfrac{17}{5}.\dfrac{1}{5}=\dfrac{17}{25}$

Resposta: item c)