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0755tipzsb
@0755tipzsb
August 2022
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помогите пожалуйста 9 КЛАСС
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liana200005
-cos^2 a-sin^2 a
————————-
ctg^2 a*tg^2 a
ctg a * tg a = 1
cos^2+sin^2=1
поэтому мы получаем -1
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Answers & Comments
————————-
ctg^2 a*tg^2 a
ctg a * tg a = 1
cos^2+sin^2=1
поэтому мы получаем -1