Solve this in quadratic formula please and thank you.

(2/3) + or - .943i

Step-by-step explanation:

Use quadratic formula.

A = 3

B = -4

C = 4

or 2.828i

4/6= 2/3

< 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⭐

justin bieber ml.