Question

rezolvați ecuația aceasta:​

Answer 1

Răspuns:

Explicație pas cu pas:

sin(2x+π/3)= -1/2

se     stie     ca       sinusul       e     negativ    in       cadranul     3      si       4

sinπ/6=1/2=>

sin(π+π/6)=-1/2

sin7π/6= -1/2

sin(7π/6+π/2)= _1/2
sin7π/6+3π/6)= -1/2
sin 10π/6= -1/2

=

a,sin(2x+π/3)=sin7π/6

2x+π/3=7π/6

2x=7π/6-π3

2x=7π/6-2π/6

2x=5π/6

x1=5π/12

sin(2x2+π/3)=sin10π/6= sin5π/3=>

2x2+π/3=5π/3

2x2=5π/3-π/3

2x2=4π/3

x2=2π/3