What is the value of the fraction below?

Undefined

Explanation:

Anything over 0 is undefined

I cannot understand your question

but if it's 29/0 then answer will be infinity. because anything divided by 0 is infinity.

< 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⭐