Question

Помогите пожалуйста

Answer 1

Ответ:

task/26360795

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(180° - (60°+α) ) / (180°- α) =5 / 8 ;

(120° - α) / (180°- α) =5 / 8 ;

8(120° - α) = 5 (180°- α) ;

960° - 8α = 900° - 5α ;

960° - 900° = 8α - 5α ;

60° = 3α ;

α = 20° . * * * 20° ; 80° * * *