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anastasi1661
@anastasi1661
July 2022
1
27
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В треугольнике АВС угол С равен 90
помогите решить
тангенс А равен 7/24
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pidmalivska
BC=ABSinA=AB√1-Cos²A=AB√1-(1/(1+tg²A)=5√1-(1/1+49/576)=5√1-(576/625)=5√49/625=5*(7/25)=7/5= 1.4по т. Пифагора:
AC=√AB²-BC²=√25-1.96=√23.04=
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