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Vinchester20051000
@Vinchester20051000
August 2022
1
20
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ПОМОГИТЕ, ПОЖАЛУЙСТА!!!!
Доказать тождество:
tg2a+2ctg2a=2/sin4a
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Universalka
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4 votes
Thanks 4
Vinchester20051000
Я вас люблю, спасибо! Не поможете ещё с кое-чем? Просто, это ужасный номер. Я решила лишь несколько.
Vinchester20051000
Можете помочь с:
Vinchester20051000
ctg2a-sin4a=cos4a*ctg2a
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