(-11, 12),(-4,-9) what is the slope

m = -21 / 7 = -3 / 1 = -3

Step-by-step explanation:

i think im not sure but i hope it helps and good luck!

< 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⭐

step-by-step explanation:

1