Найдите градусные меры \(\angle BAC\) и \(\angle BCA\) , используя данные рисунка.

• \(\angle BAC = {70^\circ}, \angle BCA = {70^\circ}\)
• \(\angle BAC = {40^\circ}, \angle BCA = {100^\circ}\)
• \(\angle BAC = {40^\circ}, \angle BCA = {40^\circ}\)