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Lecha123
@Lecha123
July 2022
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Решить уравнения:
1)3cos^2x=2sin2x
2)2cos2x+1=5sin^2x+6cosx
3) sin^2+21cos^2x=5sin2x
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Анвеекела
3cos^2x-4sinx*cosx=0 / делим на cos^2x
3-4tgx=0
tgx=3/4, отсюда найдете x.
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Answers & Comments
3-4tgx=0
tgx=3/4, отсюда найдете x.