Answer:
43°
Step-by-step explanation:
From the diagram
∠xwy=∠xyw = isosceles triangle where base angles are equal
∠y= ∠w = (180-86)÷2 = 47°
if ∠xzy=90° and ∠xyz =47° then ∠d=?
∠d= 180°-(90°+47°)
∠d=180°-137° =43°
