Вопрос школьника по предмету Геометрия
Дано: треугольник ABC, A=C, AC_AB= 3:4, P= 5,5м
Найти: AC, AB, BC
СРОЧНО!!!!!! ПОЖАЛУЙСТА ПОМОГИТЕ!!!!! ДАЮ 30 БАЛЛОВ!!!!
Ответ учителя по предмету Геометрия
Ответ:
=120
Объяснение:
BC²=2²+10²-2*2*10*(-0,4)=4+100+16=120
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