1)x=6 π+12+12 π
2)
Объяснение:
1.cos(x/6-2)=-1
x/6-2= π+2 π
x-12=6 π+12 π
x=6 π+12+12 π
2.2cos(π/8-3x)+1=0
2cos(π/8-3x)=-1
cos(π/8-3x)=-1/2
π/8-3x=2π/3
15π/8+3x=cos(-1/2)
x=-35π/72+2π/3
x=- 29π/72+2π/3
1)x=6 π+12+12 π
2)
Объяснение:
1.cos(x/6-2)=-1
x/6-2= π+2 π
x-12=6 π+12 π
x=6 π+12+12 π
2.2cos(π/8-3x)+1=0
2cos(π/8-3x)=-1
cos(π/8-3x)=-1/2
π/8-3x=2π/3
15π/8+3x=cos(-1/2)
x=-35π/72+2π/3
x=- 29π/72+2π/3