What do you do when your bored?

Answer questions on/p>

Step-by-step explanation:

When I get bored I find subjects I have knowlege in and answer the questions. Otherswise I think of 2 unconnected topics on wikipedia and try to see how many pages/article changes it takes for me to reach my destination. Its a fun time waster and shows just how connected everyhtinf is  

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

.bjbjk.b,j.l.

step-by-step explanation: