2sinx=-1 объяснение решения!
2sin(x)=-1
sin(x)=-1/2
x=(-1)^n*arcsin(-1/2)+pi*n
x=(-1)^n*7pi/6 +pi*n
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2sin(x)=-1
sin(x)=-1/2
x=(-1)^n*arcsin(-1/2)+pi*n
x=(-1)^n*7pi/6 +pi*n