Which expresses 54 : 81 in its simplest form?

A)9/6
B)6/9
C)3/2
D)2/3

b

Step-by-step explanation:

divide both by 9

< 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⭐

ou would have 12 of each