Answer:
49°
Step-by-step explanation:
∠YVX +43° +52° +36°= 180° (adj. ∠s on a str. line)
∠YVX +131°= 180°
∠YVX= 180° -131°
∠YVX= 49°
☆ The sum of angles on a straight line is 180°.
