Answer fast

1. 3.5(w+7)=?
2.1/2(f+10)=?
3.4(3z+2)=?
4. 20b+16c=?
5. 30d+18=?
6. 24g-8h=?

answer: do you still need this?

< 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⭐