Question

cos (x − 7π/ 6 ) = 0 qual resultado?

Answer 1

cos(x-7π/6)=0

no intervalo 0<y<2π

cosy=π/2 ou cosy=3π/2

logo,

x-7π/6=π/2

x=π/2+7π/6

x=(3π+7π)/6

x=10π/6

x=5π/3

ou

x-7π/6=3π/2

x=3π/2+7π/6

x=(9π+7π)/6

x=16π/6

x=8π/3