(sin 3x+sin x)/cos x=0
sinx+sin3x=0
2sin(2x)=0
2x=πn , n ∈ Z
ответ х=(πn)/2, n ∈ Z
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(sin 3x+sin x)/cos x=0
sinx+sin3x=0
2sin(2x)=0
2x=πn , n ∈ Z
ответ х=(πn)/2, n ∈ Z