Question

Please explain how you got your answer! ​

Answer 1

Explanation:

∠b + ∠a + 50° = 180°

∠b + ∠90 + 50° = 180°

∠b = 180° - 90° - 50° = 40°

Answer 2

Answer: b =50°

Explanation:

The angles on a straight line =180°

180° = 50°+90°+b

180°-50°-90°=b

50° = b