примем ∠bc за х, тогда ∠ас=∠bc+23°=х +23°
∠ab=∠ас+∠bc=70°
х +23°+х =70°
2х=47°
х=23,5°
∠ас=х +23°=23,5°+23°=46,5°
примем ∠bc за х, тогда ∠ас=∠bc+23°=х +23°
∠ab=∠ас+∠bc=70°
х +23°+х =70°
2х=47°
х=23,5°
∠ас=х +23°=23,5°+23°=46,5°