Answer:
- ∠DBC = 25°
- ∠DCB = 65°
- ∠ACD = 25°
Explanation:
All the right triangles are similar, so all will have the same angles.
The missing angle (B) in ΔABC is the complement of the given one:
∠DBC = 90° - 65° = 25°
The missing angles in the smaller triangles are the complements of the known acute angles in those triangles.
A diagram can help you see this.