Question

Помогите с примером! Буду благодарен.

Answer 1

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Answer 2

$\mathtt{S=\frac{d_1d_2sin\alpha}{2}~\to~d_1=\frac{2S}{d_2sin\alpha}=\frac{2*107,1}{17*0,9}=\frac{2*1071}{17*9}=\frac{2*63}{9}=2*7=14}$