I'm the best, I know.
Now u gotta admit that I'm your favorite

I feel like I've heard of that line before hm.. But, Idrc now I won't hear it ever again.

< 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⭐

the answer

b. they are parallel and will never intersect.