Given,
∠AOE = 30°
∠DOB = 40°
So, ∠EOD = 180 - (30+40) [angles on a straight line]
= 180 - 70
= 110
∠EOD = ∠COF [ vertically opposite angle]
∴ ∠COF = 110°
Divide -3
-3/-3a = 15/-3
a = -5
Answer: The correct answer will be C. (Since the last comment got deleted smh)
