Question

помогите с двумя задачами¡¡¡

Answer 1

Ответ:

1)hверх = 90°+90°-60°=120°

2)h ниж = 90°-(90-60) = 60°

A = 75°

h = 90+20-(-5)= 115°

h = 20-(90-(-5))=-65°

A = 45°