What is the answer of 2.8 plus 7.2

< 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⭐

this is not the answer this is just a question. is this middle school math?

step-by-step explanation:

if x = 1, then the answer is 3.5

answer: list the statements and i will follow up!

step-by-step explanation: