Question

In the below figure the value of angle ADC is
B
A 60°/30
60°
30°
45°
55°​

Answer 1

Answer:

ANSWER

According to theorem of circles ∠AOC=2∠ADC    .....(i) 

∠AOC=∠AOB+∠BOC=60∘+30∘=90∘

from equation(i) 

90∘=2∠ADC

∠ADC=45∘