Question

Na tabela a seguir, qual valor deveria ser colocado dentro no seno de 30°?
a-1/2
b-1
c-0
d--1
e-3

Answer 1

Explicação passo-a-passo:

$\sf tg~30^{\circ}=\dfrac{sen~30^{\circ}}{cos~30^{\circ}}$

$\sf \dfrac{\sqrt{3}}{3}=\dfrac{sen~30^{\circ}}{\frac{\sqrt{3}}{2}}$

$\sf sen~30^{\circ}=\dfrac{\sqrt{3}}{3}\cdot\dfrac{\sqrt{3}}{2}$

$\sf sen~30^{\circ}=\dfrac{3}{6}$

$\sf \red{sen~30^{\circ}=\dfrac{1}{2}}$

Letra A