Question

Angle aob=130 where o is the center of circle. Find anglebco and anglebdc

Answer 1

Total of angles in a circle is 360
So, aob = 130
360 - 130 = 230 degree

therefore, bco and bdc together makes 230 degree.

and 230/2 = 115
bco = 115
bdc = 115

Answer 2

Total angel of in a circle is 360
and aob 130
so 360-130=230

solve it 230/2=115

so angle of bdc is=115 is correct answer. !