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Yerimalyshka
@Yerimalyshka
July 2022
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В треугольнике АВС;АВ=4см,АС=6см,cos a=0,4cм ,ВС-?
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erzhan9210
ВС²= AB²+AC²-2*AB*AC*cosA = 4²+6²-2*4*6*0,4 = 16+36-19,2 = 32,8
BC= √32,8 = 2√8,2
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Answers & Comments
BC= √32,8 = 2√8,2