The value of an antique chair is projected to appreciate $60 each year. if the chair will be worth $650 in 2 years, what will it be worth in 10 years

b.an increase in a causes b to decrease

< 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⭐