Question

1. Calcule o seno, o cosseno e a tangente do ângulo a.​

Answer 1

cálculo do outro cateto:

$\mathsf{x^2=13^2+5^2}\\\mathsf{x^2=169+25}\\\mathsf{x^2=194\implies x=\sqrt{194}}</p><p>$

$\mathsf{sen(\alpha)=\dfrac{\sqrt{194}}{13}}\\\mathsf{cos(\alpha)=\dfrac{5}{13}}\\\mathsf{Tg(\alpha)=\dfrac{\sqrt{194}}{5}}$