A parabola has a vertex at (-1,0) and opens down. What is the equation of the parabola?

y = -(x + 1)^2

Step-by-step explanation:

I graphed the parabola on the graph below so you can see that it has a vertex at (-1,0) and opens down.

< 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⭐