Mrs. diaz wants a new carpet for her living room the room is 15 feet by 12 feet how many square yards of carpet will she need?

< 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⭐

why are you giving so many marks make your marks less and make a question list so that i can understand your question very nicely