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goldenking2015
@goldenking2015
July 2022
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Решите уравнение 6 sin^2 x + sin x cos x - cos^2 x=0
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shevtsovavalia
6sin²x+sinxcosx-cos²x=0
6tg²x+tgx-1=0
tgx=a
6a²+a-1=0
D=25
a=-1/2; a=1/3
tgx=-1/2 tgx=1/3
x=-arctg1/2+πn x=arctg1/3+πn
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Answers & Comments
6tg²x+tgx-1=0
tgx=a
6a²+a-1=0
D=25
a=-1/2; a=1/3
tgx=-1/2 tgx=1/3
x=-arctg1/2+πn x=arctg1/3+πn