sin²x-sin(2x)=0
sin²x-2sinxcosx=0
sinx(sinx-2cosx)=0
sinx=0 или sinx-2cosx=0 |:cosx≠0
x₁=πn, n∈Z tgx-2=0
tgx=2
x₂=arctg2+πn, n∈Z
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sin²x-sin(2x)=0
sin²x-2sinxcosx=0
sinx(sinx-2cosx)=0
sinx=0 или sinx-2cosx=0 |:cosx≠0
x₁=πn, n∈Z tgx-2=0
tgx=2
x₂=arctg2+πn, n∈Z