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AntonOzerov99
@AntonOzerov99
February 2022
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Упростите выражение:
sin²a+ sin²a*ctg²a
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nKrynka
Решение
sin²a+ sin²a*ctg²a = sin
²a + sin²a * (cos²a / sin²a) =
= sin²a + cos²a = 1
4 votes
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Answers & Comments
sin²a+ sin²a*ctg²a = sin²a + sin²a * (cos²a / sin²a) =
= sin²a + cos²a = 1