Question

Помогите с примером! Буду благодарен.

Answer 1

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Answer 2

$mathtt{S=frac{d_1d_2sinalpha}{2}~to~d_1=frac{2S}{d_2sinalpha}=frac{2*107,1}{17*0,9}=frac{2*1071}{17*9}=frac{2*63}{9}=2*7=14}$