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golubovamasha2
@golubovamasha2
August 2022
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В треугольнике ABC угол C равен 90∘, CH — высота, AB=20, косинус угла A равен 3/4, Найти АH.
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MissKrash
Verified answer
Соs A =AC/AB
3/4=AC/20--->АС=3*20/4=15из треугольника АНС :cos A =AH /AC ;3/4=AH/15;AH=3*15/4=11,25
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Verified answer
Соs A =AC/AB3/4=AC/20--->АС=3*20/4=15из треугольника АНС :cos A =AH /AC ;3/4=AH/15;AH=3*15/4=11,25