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radictka
@radictka
July 2022
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Упростите выражение:
1+cos2a/cosa -sin(п/2+a)
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uekmyfhfp
1+cos2a/cosa -sin(п/2+a) = 1 + 2cos^2 a - 1 / cos a - cos a =
=2coa^2a/ coa - cosa= 2cosa - cos a = cosa
2 votes
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radictka
Спасибо большое)))
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Answers & Comments
=2coa^2a/ coa - cosa= 2cosa - cos a = cosa