Question

(4)
4. In triangle ABC, AB = AC and angle B = 45°. Then, angle A is
(1) 45°
(2) 60°
(3) 90°
(4) 75°​

Answer 1

Answer:

a= 90°

Step-by-step explanation:

c = b

so c = 45 °

a+b+c = 180°

45° + 45° + c = 180°

c = 180° - 90 °

c= 90°