Mario and luigi plan to buy a nintendo switch for $ 299.00 nintendo switch games cost $59.99 each . they plan to purchase one console.

< 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⭐

is there supposed to be a diagram or a graph for this one? ?

step-by-step explanation: