Question

what is the answer for 4th question

Answer 1

right angle is the answer

Answer 2

1. From given figure BEC forms triangle
2. hence angle ECB + angle CEB + angle EBC=180
3. given angle CBE=60
4. hence from this we get angle CEB=30
5. It is clear that BE perpendicular to ED
6. hence angle BED=90
7. If angle CEB=30 then angle CED will be =60

hole this will help u