Help please, this is difficult for me! BrainIiest and high points :(

B.

Step-by-step explanation:

y = x

Whatever y is, x must be equal (same) as it.

could you reply to this with the question so i can ?

< 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⭐