Which expression has the smallest value a -19 -34 22 47

This is easy I learned it last year

Step-by-step explanation:

the smallest is -34

the biggest is 47

In order it is :

-34,-19,22,47

Hope I helped sorry if you get it wrong

< 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⭐