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LINDEM
@LINDEM
July 2022
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Найдите sin a ...........
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ewgenijbark
Verified answer
По основному тригонометрическому тождеству
sin²α + cos²α = 1
отсюда
т.к. 3π/2<α<π, то cos>0, sin < 0,
значит
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Answers & Comments
Verified answer
По основному тригонометрическому тождествуsin²α + cos²α = 1
отсюда
т.к. 3π/2<α<π, то cos>0, sin < 0,
значит