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аРика1111
@аРика1111
August 2022
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срочно,помогите,плиз!!!!!
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SuperYuran
СН=АС*sinA
(sinA)^2+(cosA)^2=1
(sinA)^2+(16/25)=1
(sinA)^2=9/25
sinA=3/5 или sinA=-3/5
Т.к. угол А острый, то sinA=3/5.
CH=AC*sinA=5*3/5=3
Ответ: СН=3
1 votes
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Answers & Comments
(sinA)^2+(cosA)^2=1
(sinA)^2+(16/25)=1
(sinA)^2=9/25
sinA=3/5 или sinA=-3/5
Т.к. угол А острый, то sinA=3/5.
CH=AC*sinA=5*3/5=3
Ответ: СН=3