Question

plz help.............

Answer 1

Hope it help.............

Answer 2

Answer:

a + b = 90°

Step-by-step explanation:

From Figure:

∠DBA = a, ∠EBC = b, ∠DBE = 90°.

Since ABC is a straight line, so

⇒ ∠DBA + ∠DBE + ∠EBC = 180°

⇒ a + 90° + b = 180°

⇒ a + b = 180° - 90°

⇒ a + b = 90°

Hope it helps!