01 – Dada a função quadrática y=3x²+2x-4, os coeficientes a, b e c são respectivam nte: * a) 2, 3 e -4 b) 3, -4 e 2 c) 1, 2 e -4 d) 3, 2 e -4

< 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 radius is 2 times the diameter.

step-by-step explanation: