Explanation:
From the image below, we have that
[tex]arc\angle ACB=240^0[/tex]
Find,
[tex]\angle B[/tex]
Arc angle
[tex]arx\angle ABD=360-240=120^0[/tex]
From the image below, we will have the final answer to be
Hence,
Using the Alternate segment theorem,
[tex]\angle B=60^0[/tex]
OPTION C is the correct answer
