Question

A, b and c are three points on circle with centre O such that angle BOC = 30 and angle AOB = 60 , if D is the point on circle other than the arc ABC . Find ADC​

Answer 1

Answer= angle ADC = 45.

Answer 2

∠AOC=∠AOB+∠BOC

=60°+30°

=90°

.

. . ∠AOC= 2 ∠ADC

90° = 2 ∠ADC

2 ∠ADC=90°

∠ADC = 1/2×90°

∠ADC= 45°

thanks