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usmati
@usmati
August 2022
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в треугольнике ABC AC=BC AH-высота sin A=0.8 . найдите косинус угла BAH
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yanaysvert
SinA=0.8
sin^2+ cos^2 = 1
cos^2 = 1 - 0.64= 0.36
cos = корень из 0.36 =0.6
ответ: косинус равен 0.6
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Answers & Comments
sin^2+ cos^2 = 1
cos^2 = 1 - 0.64= 0.36
cos = корень из 0.36 =0.6
ответ: косинус равен 0.6