Question

Se o valor de cos x = 0,8090, qual é o valor do angulo x ?

Answer 1

Boa tarde

cos(x) = 0,8090

x = arccos(0.8090) = 0.628347 radianos

0.628347/π = x/180

πx = 180*0.628347
x = 180*0.628347/π
x = 180*2π/10π = 180/5 = 36°