This question was uploaded on 19/12/21 on social media accounts.
Solution:
Click here for proof of this identity (I proved it in one of my previous questions)
Due to angle inscribed in a semicircle, a+b = 90°
⇒ 2x+2y = 90°
⇒ x+y = 45°
This question was uploaded on 19/12/21 on social media accounts.
Solution: