Question

determine o sen, cos, tg do angulo de 40° (sendo sen 40°= 0,64, cos 40°= 0,76, tg 40°= 0,83

Answer 1

$Sen= \frac{cat.oposto}{hip} \\ \\ Sen40= \frac{x}{5,6} \\ \\ 0,64= \frac{x}{5,6} \\ \\ x=3,584 \\ \\ Cos= \frac{cat.adjacente}{hipotenusa} \\ \\ Cos40= \frac{y}{5,6} \\ \\ 0,76= \frac{y}{5,6} \\ \\ y=4,256$